taxonID	type	description	language	source
03A587813C4AFFE0FF7B38C1FAB8CF79.taxon	materials_examined	Material examined. • 7 spms, Stn. 2; • 6 spms, Stn. 7; • 6 spms, Stn. 8; • 4 spms, Stn. 11; • 1 spm, Stn. 13; • 10 spms, Stn. 15. Type locality. Port Stanley, Malvinas / Falkland Islands, from a fish stomach. Bathymetric distribution. 5 – 500 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C4AFFE0FF7B38C1FAB8CF79.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands, South Orkney Islands. SOUTH AMERICA: Malvinas / Falkland Islands, Strait of Magellan.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C4AFFE0FF7B38C1FAB8CF79.taxon	discussion	Remarks. Nucula falklandica from the 26 th Soviet Antarctic Expedition from King George Island, which is housed in the Zoological Museum Hamburg, is illustrated in Engl (2012). Rauschert (1991) published his findings from the 26 th (1980 – 1982) and 30 th (1984 – 1986) Soviet Antarctic Expedition from Ardley Cove near King George Island. The provenance of these records is almost exactly the same as that of the present study. At that time, he detected the species at 12 stations in depths between 5 and 70 metres. In the present study we observed this species between 35 and 70 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C4AFFE2FF7B3B5EF805C98C.taxon	materials_examined	Material examined. • 2 spms (Holotype SMF 367275; Paratype SMF 367276), Stn. 3; • 1 spm (Paratype SMF 367277), Stn. 9. Type locality. Ardley cove, Maxwell Bay, King George Island, South Shetland Islands. Bathymetric distribution. 1 – 100 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C4AFFE2FF7B3B5EF805C98C.taxon	distribution	Geographical distribution. ANTARCTICA: -. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C4AFFE2FF7B3B5EF805C98C.taxon	discussion	Remarks. We have recently described this species from this material. It is the first recent record of an Ennucula species in South Shetland Islands. No Ennucula species were found during the numerous Antarctic expeditions, although some of them also visited King George Island. It is very likely that E. ardleyana was overlooked in earlier studies due to its small size.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFE2FF7B3EBCF8F2CC2A.taxon	materials_examined	Material examined. • 3 spms, Stn. 3; • 1 spm, Stn. 14. Type locality. South Orkney Islands. Bathymetric distribution. 30 – 304 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFE2FF7B3EBCF8F2CC2A.taxon	distribution	Geographical distribution. ANTARCTICA: Palmer Archipelago. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFE2FF7B3EBCF8F2CC2A.taxon	discussion	Remarks. While the spiral sculpture is much more pronounced in young specimens than in adults, the posteroventral decurvation is not developed in young individuals (Fig. 4 D). We found this species in depths between 70 and 100 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFE2FF7B391EFF5ECEEF.taxon	materials_examined	Material examined. • 67 spms, Stn. 3; • 22 spms, Stn. 6; • 1 spm, Stn. 8; • 1 spm, Stn. 11; • 3 spms, Stn. 13; • 9 spms, Stn. 14. Type locality. South Orkney Islands. Bathymetric distribution. 15 – 1263 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFE2FF7B391EFF5ECEEF.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands, South Orkney Islands, Drake Passage. SOUTH AMERICA: Malvinas / Falkland Islands, southern Chile.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFE2FF7B391EFF5ECEEF.taxon	discussion	Remarks. Prodissoconch I has a size of about 185 µm and a characteristic pitted surface. We found the species at six stations between 35 and 100 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFEFFF7B3B43FF5CCA44.taxon	materials_examined	Material examined. • 43 spms, Stn. 2; • 4 spms, Stn. 3; • 4 spms, Stn. 6; • 10 spms, Stn. 7; • 78 spms, Stn. 8; • 7 spms, Stn. 11; • 5 spms, Stn. 12; • 6 spms, Stn. 13; • 14 spms, Stn. 14; • 5 spms, Stn. 15. Type locality. South Shetland Islands. Bathymetric distribution. 4 – 824 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFEFFF7B3B43FF5CCA44.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Kerguelen Islands. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: Malvinas / Falkland Islands, South Patagonia.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C48FFEFFF7B3B43FF5CCA44.taxon	discussion	Remarks. Aequiyoldia eightsii is very common in our study area. In the neighbouring Admiralty Bay it was also found frequently down to a depth of 240 m. During our survey, the species was recorded in Fildes Strait and Ardley Cove in depths between 15 and 100 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEFFF7B3F4CFBABCD5A.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 11 spms, Stn. 3; • 12 spms, Stn. 6; • 75 spms, Stn. 7; • 17 spms, Stn. 8; • 155 spms, Stn. 11; • 100 spms, Stn. 13; • 11 spms, Stn. 14; • 21 spms, Stn. 15. Type locality. Off the Cape Bird Peninsula in McMurdo Sound (Ross Sea), 457 m depth. Bathymetric distribution. 10 – 870 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEFFF7B3F4CFBABCD5A.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Macquarie Island. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEFFF7B3F4CFBABCD5A.taxon	discussion	Remarks. Limopsis lilliei was one of the most common species found during our study. The depths were between 35 and 100 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEFFF7B39ADF950CF43.taxon	materials_examined	Material examined. • 13 spms, Stn. 9. Type locality. Deception Islands (South Shetland Islands), 75 m depth. Bathymetric distribution. 0 – 75 m. Substrate. Soft bottom, probably attached to some biological or abiotic structures.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEFFF7B39ADF950CF43.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands, South Orkney Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEFFF7B39ADF950CF43.taxon	discussion	Remarks. We found it at one station in the intertidal zone. The species was already known from the study area from previous Soviet Antarctic expeditions.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEEFF7B3B43FAB8C9F0.taxon	materials_examined	Material examined. • 2 spms, Stn. 3. Type locality. Ross Sea in depths between 37 and 238 m. Bathymetric distribution. 5 – 220 m. Substrate. Soft bottom, probably attached to some biological or abiotic structures.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEEFF7B3B43FAB8C9F0.taxon	distribution	Geographical distribution. ANTARCTICA: Ross Sea, Davis Sea, Weddell Sea. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands, South Orkney Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C45FFEEFF7B3B43FAB8C9F0.taxon	discussion	Remarks. We follow the argumentation of Urcola & Zelaya (2024), who regard P. limoides as a valid species and not as a synonym of Philobrya sublaevis Pelseneer, 1903. We found two specimens in depth of 100 m. The species is already known (as P. sublaevis) from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFEEFF7B3FC2F9EECDA2.taxon	materials_examined	Material examined. • 50 spms, Stn. 4. Type locality. Bransfield Straits near South Shetland Islands at a depth of 27 m (from a fish stomach). Bathymetric distribution. 0 – 30 m. Substrate. Epibenthic, attached by byssus to hard substrates, algae or hydroids and bryozoans.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFEEFF7B3FC2F9EECDA2.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFEEFF7B3FC2F9EECDA2.taxon	discussion	Remarks. Until recently, the name L. miliaris (R. A. Philippi, 1845) was used for the findings at King George Island. Güller & Zelaya (2025) revised the species complex morphologically and genetically and have re-established L. bennetti for the Scotia Arc islands and the Antarctic Peninsula while L. miliaris is restricted to the Magellan region. We have observed this species only at one intertidal station with about 50 specimens. The species is already known from the Maxwell and Admiralty Bays. For Antarctic Peninsula beds it is one of the most common epibenthic species on the red algae Gigartina (Rosenfeld et al. 2017).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFEEFF7B3DD4FB7ECBC2.taxon	materials_examined	Material examined. • 1 spm, Stn. 8. Type locality. Wandel (or Booth) Island at the Antarctic Peninsula. Bathymetric distribution. 5 – 321 m. Substrate. Soft bottom, probably attached to some biological or abiotic structures.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFEEFF7B3DD4FB7ECBC2.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula, Weddell Sea, Ross Sea. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Shetland Islands, South Orkney Islands, South Sandwich Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFEEFF7B3DD4FB7ECBC2.taxon	discussion	Remarks. We found one specimen in depth of 35 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFE8FF7B3A23FE45C888.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 9 spms, Stn. 15. Type locality. Scotia Bay, South Orkney Islands, 16 to 27 m depth. Bathymetric distribution. 18 – 1120 m, but usually in shallower depths. Substrate. Epibenthic, attached to spines of sea urchins and only exceptionally to sponges, bryozoans, gorgonians, hydroids, ascidians or algae.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFE8FF7B3A23FE45C888.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C44FFE8FF7B3A23FE45C888.taxon	discussion	Remarks. Our observations were made at depths of 70 and 90 m. The species is already known from the Maxwell and Admiralty Bays. According to Güller & Zelaya (2025), this species is probably a species complex of at least two different species that occur either on the islands of the Scotia Arc or in the Antarctic.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFE8FF7B3852FED6CE36.taxon	materials_examined	Material examined. • 1 spm, Stn. 3; • 5 spms, Stn. 6; • 67 spms, Stn. 7; • 45 spms, Stn. 8; • 72 spms, Stn. 11; • 1 spm, Stn. 13; • 6 spms, Stn. 14; • 51 spms, Stn. 15. Type locality. “ Near the Antarctic Circle ” from 465 m depth. Bathymetric distribution. 0 – 1674 m, but usually in shallower depths. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFE8FF7B3852FED6CE36.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Kerguelen Islands, Bouvet Island. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFE8FF7B3852FED6CE36.taxon	discussion	Remarks. Until recently the species was identified as C. astartoides (E. von Martens, 1878), which falls into the synonymy of Cardita astartoides Deshayes, 1858 (see MolluscaBase 2025). We observed C. antarctica in depths between 35 and 100 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFE8FF7B3DB8FB98CB26.taxon	materials_examined	Material examined. • 9 spms, Stn. 5; • 1 spm, Stn. 9. Type locality. Strait of Magellan. Bathymetric distribution. 0 – 598 m. Substrate. Hard bottom, probably attached to stones or macrophytes.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFE8FF7B3DB8FB98CB26.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: Kerguelen Islands, Macquarie Islands. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: Straits of Magellan, Malvinas / Falkland Islands.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFE8FF7B3DB8FB98CB26.taxon	discussion	Remarks. We found this species at two stations from the intertidal to 15 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFEAFF7B3B43F810C9F0.taxon	materials_examined	Material examined. • 1 spm, Stn. 1; • 66 spms, Stn. 2; • 60 spms, Stn. 3; • 16 spms, Stn. 6; • 10 spms, Stn. 7; • 3 spms, Stn. 8; • 6 spms, Stn. 10; • 11 spms, Stn. 11; • 19 spms, Stn. 13; • 1 spm, Stn. 14; • 66 spms, Stn. 15. Type locality. Winter Quarters, McMurdo Sound (Ross Sea), 23 m depth. Bathymetric distribution. 5 – 507 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFEAFF7B3B43F810C9F0.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C42FFEAFF7B3B43F810C9F0.taxon	discussion	Remarks. In both Fildes Strait and Ardley Cove, the species was very common in depths between 35 and 100 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C40FFEAFF7B3DD5FE2DCBC2.taxon	materials_examined	Material examined. • 1 spm, Stn. 2. Type locality. Island of Petermann in the Bellingshausen Sea. Bathymetric distribution. 15 – 1281 m, but usually in shallower waters. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C40FFEAFF7B3DD5FE2DCBC2.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula, Ross Sea, Bellingshausen Sea, Weddell See. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Sandwich Islands, South Shetland Islands. SOUTH AMERICA: Malvinas / Falkland Islands.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C40FFEAFF7B3DD5FE2DCBC2.taxon	discussion	Remarks. This species can reach shell lengths of 10 to 19 mm. We found only a single specimen of 7.2 mm in length in a depth of 70 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C40FFEAFF7B3836FBE2CF43.taxon	materials_examined	Material examined. • 233 spms, Stn. 4; • 3 spms, Stn. 9. Type locality. Two Hummock Island (Antarctic Peninsula), intertidally. Bathymetric distribution. Rocky intertidal. Substrate. Hard bottom, attached to stones.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C40FFEAFF7B3836FBE2CF43.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C40FFEAFF7B3836FBE2CF43.taxon	discussion	Remarks. The taxonomic classification of this species proved to be difficult. The specimen illustrated in Engl (2012, pl. 10, fig. 3) as Lasaea consanguinea (E. A. Smith, 1877) with the same place of origin as our study area proved to be identical. However, Huber (2010, fig. on p. 263; 2015, p. 503) revised the identification and named the specimen illustrated in Engl (2012) as K. subquadrata. Engl himself revised his L. consanguinea in 2016 and identified it as Kidderia bicolor (E. von Martens, 1885). By revising the taxonomic questions and the genetic delimitation of the species, it was possible to determine that the Antarctic species is Kidderia subquadrata and the species found on the sub-Antarctic islands of Diego Ramirez, South Georgia and the Kerguelen Archipelago is Kidderia minuta Dall, 1876 (Levicoy et al. 2021 a, b). The presence of other species of the genus (e. g. K. bicolor) could not be confirmed so far and requires a greater sampling effort (Levicoy et al. 2021 a). Kidderia subquadrata is a valid species of Gaimardiidae, with family-typical dentition. We have found it frequently and exclusively in rock pools in subtidal depths. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF4FF7B3D28FE18CB99.taxon	materials_examined	Material examined. • 7 spms, Stn. 2; • 2 spms, Stn. 3; • 5 spms, Stn. 6; • 61 spms, Stn. 7; • 200 spms, Stn. 8; • 22 spms, Stn. 10; • 126 spms, Stn. 11; • 32 spms, Stn. 12; • 25 spms, Stn. 13; • 8 spms, Stn. 14; • 34 spms, Stn. 15. Type locality. Anvers Island (Antarctic Peninsula). Bathymetric distribution. 5 – 113 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF4FF7B3D28FE18CB99.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula, Bellingshausen Sea. SUBANTARCTICA: Kerguelen Islands, Macquarie Islands. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF4FF7B3D28FE18CB99.taxon	discussion	Remarks. In contrast to the following species, A. charcoti was never found in the intertidal, but occupied depths between 15 and 100 m. This common species was regularly colonised by polyps of the hydrozoan Monobrachium Mereschkowsky, 1877. Altenaeum charcoti is easily confused with A. narchii, with which it often occurs sympatrically. The somewhat more bulbous shape, the shorter main teeth of the left valve, and the absence of the ligament plate clearly distinguish this species from the following species. The species is already known from the Maxwell and Admiralty Bays. The species is a free-living, shallow-burrower, with a predominantly deposit-feeding habit (Passos et al. 2005).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF4FF7B3FFDF9DECE7E.taxon	materials_examined	Material examined. • 28 spms, Stn. 2; • 43 spms, Stn. 4; • 4 spms, Stn. 5; • 26 spms, Stn. 7; • 115 spms, Stn. 8; • 2 spms, Stn. 9; • 2 spms, Stn. 10; • 45 spms, Stn. 11; • 20 spms, Stn. 13; • 9 spms, Stn. 14; • 12 spms, Stn. 15. Type locality. In front of the Brazilian Antarctic Station, Admiralty Bay on King George Island, South Shetland Islands, 5 – 25 m. Bathymetric distribution. 0 – 100 m. Substrate. Hard and soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF4FF7B3FFDF9DECE7E.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula? SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF4FF7B3FFDF9DECE7E.taxon	discussion	Remarks. The main morphological differences to A. charcoti have already been mentioned in the previous species and have been worked out by Passos & Domaneschi (2006). There also seem to be ecological differences. Altenaeum narchii can be found very frequently in the intertidal, but also colonises deeper areas, often together with A. charcoti. We found A. narchii in a depth between 0 and 90 m. It was the fifth most common species in the intertidal. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF6FF7B3A5EFB9EC98C.taxon	materials_examined	Material examined. • 4 spms, Stn. 2. Type locality. Gauss station (Davis Sea) at a depth of 385 m. Bathymetric distribution. 1 – 752 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF6FF7B3A5EFB9EC98C.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5EFFF6FF7B3A5EFB9EC98C.taxon	discussion	Remarks. The identification of this species was difficult. Mysella minuscula (Pfeffer, 1886), a species with nomen dubium status in MolluscaBase, which has been observed loosely in some previous studies for King George Island (e. g. Narchi et al. 2002, Passos & Domaneschi 2006), may belong to this species. However, we came to the conclusion that our species belongs to Altenaeum gibbosum. It has a more backward-orientated umbo, which is also somewhat raised. The shape is more ovoid than roundish. The main teeth of the right valve are very short but prominent. Ultimately, however, a certain uncertainty remains in terms of identification. We found a few specimens in the Fildes Strait at a depth of 70 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3DF0FEF1CBFD.taxon	materials_examined	Material examined. • 1 spm, Stn. 3. Type locality. Winter Quarters, McMurdo Sound (Ross Sea), 23 m depth. Bathymetric distribution. 23 – 1449 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3DF0FEF1CBFD.taxon	distribution	Geographical distribution. ANTARCTICA: Bransfield Strait, Weddell Sea, Ross Sea. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3DF0FEF1CBFD.taxon	discussion	Remarks. This species has a roundish trapezoidal shape and can reach a shell length of up to 7 mm. Our specimen has a length of 4.3 mm and stands out from the Altenaeum species mentioned above by its shape and size alone. We found it at a station in Ardley Cove at a depth of 100 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3FC2F8AFCD17.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 8 spms, Stn. 3; • 2 spms, Stn. 10. Type locality. Maxwell Bay, King George Island, South Shetland Islands in 50 to 100 m. Bathymetric distribution. 50 – 100 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3FC2F8AFCD17.taxon	distribution	Geographical distribution. ANTARCTICA: -. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3FC2F8AFCD17.taxon	discussion	Remarks. We found this species in depths between 60 and 100 m. The absence of any radial sculpture on the outer shell surface separates this species from all other Antarctic Pseudokellya species.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3A1EFAB8CFA7.taxon	materials_examined	Material examined. • 62 spms, Stn. 3; • 7 spms, Stn. 7; • 9 spms, Stn. 8; • 1 spm, Stn. 10; • 3 spms, Stn. 14. Type locality. Gauss station (Davis Sea) at a depth of 385 m. Bathymetric distribution. 15 – 850 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3A1EFAB8CFA7.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: Strait of Magellan, Falkland / Malvinas Islands.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5CFFF6FF7B3A1EFAB8CFA7.taxon	discussion	Remarks. In contrast to the following species, it is significantly smaller (maximum shell height 2.3 mm) and the posterior end is angulated. Anterior and posterior ends are frequently incrusted with ferruginous material. We found it in depth between 35 and 100 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF0FF7B3FA6FE03CDCE.taxon	materials_examined	Material examined. • 85 spms, Stn. 3; • 6 spms, Stn. 6; • 11 spms, Stn. 7; • 16 spms, Stn. 8; • 9 spms, Stn. 11; • 35 spms, Stn. 13; • 1 spm, Stn. 14. Type locality. Kerguelen Islands. Bathymetric distribution. 4 – 836 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF0FF7B3FA6FE03CDCE.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Prince Edward Islands, Kerguelen Islands. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: Strait of Magellan, Malvinas / Falkland Islands.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF0FF7B3FA6FE03CDCE.taxon	discussion	Remarks. The species was frequently found in depths between 35 and 100 m. The species is already known from the Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF0FF7B3C98FF6ACA9A.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 15 spms, Stn. 3; • 5 spms, Stn. 6; • 8 spms, Stn. 7; • 101 spms, Stn. 8; • 16 spms, Stn. 11; • 57 spms, Stn. 13; • 1 spm, Stn. 14; • 4 spms, Stn. 15. Type locality. South Orkney Islands. Bathymetric distribution. 15 – 850 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF0FF7B3C98FF6ACA9A.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula (?). SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA-.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF0FF7B3C98FF6ACA9A.taxon	discussion	Remarks. Surprisingly, the species was quite common in the Ardley Cove area in depths between 50 and 100 m. The maximum shell height of our material was about 5.5 mm. Although the maximum dimensions are smaller, both the shell shape and the dimensions of the prodissoconch are consistent with the description by Zelaya (2009). The most similar species is T. falklandica, which is more robust, much heavier and has an inflated shell (Zelaya 2009). The latter was occasionally found on King George Island by Arnaud et al. (1986), Rauschert (1991) and Passos et al. (2007) and must most probably also be assigned to T. scotiana.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF3FF7B3A7BF881C938.taxon	materials_examined	Material examined. • 1 empty double valve, Stn. 4; • 1 spm, Stn. 7; • 5 spms, Stn. 8; • 11 spms, Stn. 12; • 1 spm, Stn. 14. Type locality. South Shetland Islands. Bathymetric distribution. 1 – 508 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF3FF7B3A7BF881C938.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Kerguelen Islands. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C5AFFF3FF7B3A7BF881C938.taxon	discussion	Remarks. It is probably the largest species found in Antarctic waters. The species grows to over 80 mm and burrows deep into the soft bottom. Our largest specimen measured 55 mm. We found L. elliptica in depths between 15 and 70 m, but our method (dredge) was only partially suitable for scraping animals out of the sediment. The species is already known from the Maxwell and Admiralty Bays. The species reached an abundance of up to 30 individuals per square metre in depths deeper than 10 m in the neighbouring Admiralty Bay (Nonato et al. 2000). This species is always deeply buried, and only their siphons are detectable (Passos et al. 2022).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C59FFF3FF7B38AAFED9CEA7.taxon	materials_examined	Material examined. • 2 spms, Stn. 3. Type locality. Gauss Station (Davis Sea) at a depth of 385 m. Bathymetric distribution. 60 – 1400 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C59FFF3FF7B38AAFED9CEA7.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: Argentina (?).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C59FFF3FF7B38AAFED9CEA7.taxon	discussion	Remarks. The differentiation between C. infirma Pacheco, Teso & Pastorino, 2022 and C. infelix is, in our opinion, very difficult. Our material shows a prodissoconch length of 190 µm compared to about 200 µm in C. infirma. The dissoconch is covered with tiny microscopic pits; while the prodissoconch is smooth but has pits in C. infirma. The rostrum is relatively long and the rostral depression is visible. We tend to favour C. infelix rather than C. infirma. We found it in a depth of 100 m. The species is already known from Maxwell and Admiralty Bays. The record from the Mar del Plata Submarine Canyon off Argentina by Pacheco et al. (2022) is far away from all other localities and would have to be genetically verified.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C59FFF3FF7B3E48FEF2CC0E.taxon	materials_examined	Material examined. • 1 spm, Stn. 3; • 2 spms, Stn. 6; • 1 spm, Stn. 10. Type locality. East of Southern Orkney Islands, 430 - 450 m depth. Bathymetric distribution. 15 – 450 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C59FFF3FF7B3E48FEF2CC0E.taxon	distribution	Geographical distribution. ANTARCTICA: Bellingshausen Sea, Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C59FFF3FF7B3E48FEF2CC0E.taxon	discussion	Remarks. The species differentiation between C. minima and C. concentrica Thiele, 1912 is not clear. The characteristics listed by Zelaya & Ituarte (2006) are partly blurred. In our opinion, the present material most closely resembles C. minima, whose type locality is not far (800 km) from King George Island and only 200 km from the Elephants Islands, from where Zelaya & Ituarte (2026) re-described this species. Although the posterior tooth of the left valve is somewhat weak, the right valve has a clearly posterior tooth similar to that shown in Egorova (1993) and Zelaya & Ituarte (2006). We found it in depths of 60 m. The species is already known from King George Island.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFDFF7B38E1FFC6CE8A.taxon	materials_examined	Material examined. • 2 spms, Stn. 2. Type locality. McMurdo Sound (Ross Sea), 238 m depth. Bathymetric distribution. 22 – 731 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFDFF7B38E1FFC6CE8A.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFDFF7B38E1FFC6CE8A.taxon	discussion	Remarks. Please note the distinction to the similar species Antimargarita bentarti Aldea, Zelaya & Troncoso, 2009 and Antimargarita powelli Aldea, Zelaya & Troncoso, 2009, which were identified by Aldea et al. (2009). Antimargarita dulcis has characteristic strong spiral cords and a fine dense axial sculpture. Our specimens come from the Fildes Strait with a depth of 70 m. It was not previously known from Maxwell Bay, but has been observed in neighbouring Admiralty Bay.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFDFF7B3DB8F916CB99.taxon	materials_examined	Material examined. • 2 spms, Stn. 4; • 1 spm, Stn. 5; • 2 spms, Stn. 6; • 7 spms, Stn. 7; • 1 spm, Stn. 10; • 11 spms, Stn. 13; • 2 spms, Stn. 14; • 3 spms, Stn. 15. Type locality. South Georgia. Bathymetric distribution. 0 – 150 m. Substrate. Hard bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFDFF7B3DB8F916CB99.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFDFF7B3DB8F916CB99.taxon	discussion	Remarks. We found it at several stations between intertidal and 100 m. The species is already known from Maxwell and Admiralty Bays. Gonzáles-Wevar et al. (2019) present new molecular analyses and a comprehensive morphological revision of Nacella, which confirms the validity of all currently recognised species (and one new one), but also includes important changes to the published distributions of some species.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFFFF7B3B7EFB88C9A8.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 4 spms, Stn. 3; • 1 spm, Stn. 5; • 7 spms, Stn. 7; • 3 spms, Stn. 8; • 7 spms, Stn. 9; • 7 spms, Stn. 10; • 8 spms, Stn. 13; • 16 spms, Stn. 15. Type locality. Wandel (or Booth) Island and Flanders Bay (Antarctic Peninsula). Bathymetric distribution. 0 – 460 m. Substrate. Hard bottom and macroalgae but also soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFFFF7B3B7EFB88C9A8.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C57FFFFFF7B3B7EFB88C9A8.taxon	discussion	Remarks. We found it at several stations between the intertidal zone and 100 m depth. Margarella antarctica is associated to spots with macroalgae and rocks. The species is already known from Maxwell and Admiralty Bays. It seems to be quite common in the waters around King George Island (see also Engl 2012).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFFFFF7B3F10FB25CCE2.taxon	materials_examined	Material examined. • 8 spms, Stn. 4; • 1 spm, Stn. 7; • 8 spms, Stn. 10. Type locality. Cape Adare (Ross Sea), 15 m depth. Bathymetric distribution. 0 – 60 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFFFFF7B3F10FB25CCE2.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFFFFF7B3F10FB25CCE2.taxon	discussion	Remarks. We have found this species in depths between the intertidal zone and 60 m. The species is already known from Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFFFFF7B38E2F9D5CED3.taxon	materials_examined	Material examined. • 13 spms, Stn. 12. Type locality. Borge Bay, Signy Island (South Orkney Islands), 4 - 10 m. Bathymetric distribution. 4 – 20 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFFFFF7B38E2F9D5CED3.taxon	distribution	Geographical distribution. ANTARCTICA: Ross Sea to Adelie Land, Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFFFFF7B38E2F9D5CED3.taxon	discussion	Remarks. Our observation comes from a depth of 15 m. The maximum shell height of our material was 1.65 mm. The species is already known from Maxwell Bay. It can reach very high abundances on macroalgae as described by Amsler et al. (2022) from Lichfield Island (Palmer Archipelago).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFF9FF7B3B27F9CBC91C.taxon	materials_examined	Material examined. • 1 spm, Stn. 3; • 20 spms, Stn. 4; • 2 spms, Stn. 7; • 11 spms, Stn. 9. Type locality. Swain’s Bay (Kerguelen Islands). Bathymetric distribution. 0 – 100 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFF9FF7B3B27F9CBC91C.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: Kerguelen Islands, Macquarie Islands. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C55FFF9FF7B3B27F9CBC91C.taxon	discussion	Remarks. We found this species in depths between the intertidal zone and 100 m. The species is already known from Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFF9FF7B3D60FAB8CB9E.taxon	materials_examined	Material examined. • 6 spms, Stn. 2; • 3 spms, Stn. 3; • 4 spms, Stn. 7; • 5 spms, Stn. 10; • 4 spms, Stn. 13. Type locality. Kerguelen Islands, on a sponge. Bathymetric distribution. 0 – 457 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFF9FF7B3D60FAB8CB9E.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Kerguelen Islands. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFF9FF7B3D60FAB8CB9E.taxon	discussion	Remarks. Ponder (1983) distinguished two subspecies, E. k. kerguelensis (E. A. Smith, 1875) and E. k. regularis (E. A. Smith, 1915). The first, somewhat smaller subspecies (up to 3 mm) is restricted to the Kerguelen Islands. The second (up to 4.5 mm) is occurring around the Antarctic continent and the islands of Scotia Arc (see also Engel 2012). Since we do not differentiate at the subspecies level in this paper and also have too little material available to provide clarity in this regard, we will refer only to E. kerguelensis. If only the size is taken into account (our material was 3 to 4 mm high) then E. kerguelensis regularis can be assumed. The depth covered was intertidal up to 100 m. The species is already known from Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFF9FF7B38AAFE20CEEF.taxon	materials_examined	Material examined. • 4 spms, Stn. 2; • 2 spms, Stn. 4; • 3 spms, Stn. 14. Type locality. South Georgia. Bathymetric distribution. 0 – 100 m. Substrate. Hard and soft bottoms, often grazing on macroalgae.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFF9FF7B38AAFE20CEEF.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFF9FF7B38AAFE20CEEF.taxon	discussion	Remarks. We found this species from the intertidal zone down to 70 m. The species is already known from Maxwell and Admiralty Bays. For Antarctic Peninsula beds it is one of the most common epibenthic species on the red algae Gigartina (Rosenfeld et al. 2017). Laevilacunaria bennetti (Preston, 1916) is a similar species that also has a similar distribution pattern and is also found at King George Island. Laevilacunaria antarctica has a broad umbilicus, which is much more pronounced than those in L. bennetti.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFFBFF7B3AEFFBB6CA44.taxon	materials_examined	Material examined. • 38 spms, Stn. 2; • 16 spms, Stn. 9. Type locality. South Georgia. Bathymetric distribution. 0 – 30 m. Substrate. Hard bottom, grazing on macroalgae or stones.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFFBFF7B3AEFFBB6CA44.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: Kerguelen Islands, Crozet Islands, Marion Islands, Macquarie Islands. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C53FFFBFF7B3AEFFBB6CA44.taxon	discussion	Remarks. Engl (2012, p. 102) has made detailed comments on the unclear status of the species L. caliginosa (Gould, 1848), a name which was very often used for records on the South Shetland Islands (and elsewhere). Due to the revision of the higher latitude periwinkle species Laevilitorina caliginosa sensu lato by Rosenfeld et al. (2024) we know, that the records at King George Island refer to L. venusta. During our study, we found L. venusta exclusively in the intertidal zone. The species is already known (as L. caliginosa) from Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C51FFFBFF7B3E48F889CDE6.taxon	materials_examined	Material examined. • 557 spms, Stn. 2; • 7 spms, Stn. 9; • 1 spm, Stn. 12. Type locality. South Georgia. Bathymetric distribution. 0 – 40 m. Substrate. Hard bottom, grazing on macroalgae or stones.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C51FFFBFF7B3E48F889CDE6.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C51FFFBFF7B3E48F889CDE6.taxon	discussion	Remarks. Similar to Engl (2012), the material we found consisted of both smooth and spiral-banded specimens. Laevilitorina umbilicata was by far the most common species in our study area and was found almost exclusively in the intertidal zone. There was only one single finding from a depth of 15 m. Laevilitorina umbilicata can be confused with L. antarctica (E. A. Smith, 1902). However, it is slender and the whorls are not as distinct. Laevilitorina antarctica is more restricted to the Antarctic proper and L. umbilicata to the Antarctic Peninsula and the islands of the Scotia Arc, however, both overlap in their distribution area in South Shetland Islands and Antarctic Peninsula (Rosenfeld et al. 2022). While L. umbilicata is found in masses under stones in the immediate intertidal zone of King George Island (Aldea et al. 2016; this study), L. antarctica obviously prefers to colonise macroalgae in greater depths (9 to 20 m) (Martín et al. 2016; Amsler et al. 2022). There are a number of literature records of L. antarctica from very shallow South Shetland Islands, but it can be assumed that at least some of them are misidentifications. On the other hand, phylogenetic reconstructions of the Antarctic species L. antarctica, L. claviformis Preston, 1916, and L. umbilicata failed to discriminate them as different evolutionary units (Rosenfeld et al. 2024). If it is confirmed that they cannot be separated genetically, both L. antarctica and L. claviformis would have to be placed in the synonymy of L. umbilicata. However, a review is not the subject of this investigation. The species is already known from Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C51FFFBFF7B39E6FAB8CFD7.taxon	materials_examined	Material examined. • 1 spm, Stn. 9. Type locality. South Georgia. Bathymetric distribution. 0 – 30 m. Substrate. Hard bottom, grazing on macroalgae or stones.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C51FFFBFF7B39E6FAB8CFD7.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: Kerguelen Islands. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C51FFFBFF7B39E6FAB8CFD7.taxon	discussion	Remarks. We found only one single individual in the intertidal zone. The species is already known from Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3D28FBB4CAF9.taxon	materials_examined	Material examined. • 7 spms, Stn. 2; • 1 spm, Stn. 3; • 1 spm, Stn. 6; • 7 spms, Stn. 12; • 1 spm, Stn. 14. Type locality. Bransfield Straits near the South Shetland Islands at a depth of 27 m (from a fish stomach). Bathymetric distribution. 15 – 100 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3D28FBB4CAF9.taxon	distribution	Geographical distribution. ANTARCTICA: -. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3D28FBB4CAF9.taxon	discussion	Remarks. We found a few specimens in depths between 15 and 100 m. The largest specimen has a height of 8.8 mm. The species is already known from the Maxwell Bay.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3976F99FCFAC.taxon	materials_examined	Material examined. • 27 spms, Stn. 2; • 44 spms, Stn. 7; • 41 spms, Stn. 8; • 11 spms, Stn. 10; • 18 spms, Stn. 11; • 32 spms, Stn. 13; • 2 spms, Stn. 14. Type locality. Scotia Bay (South Orkney Islands), 16 to 18 m depth. Bathymetric distribution. 16 – 75 m. Substrate. Hard and soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3976F99FCFAC.taxon	distribution	Geographical distribution. ANTARCTICA: -. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3976F99FCFAC.taxon	discussion	Remarks. We found this species in depths between 35 and 70 m. Compared with the holotype, well-illustrated in Ponder (1983) in addition to the descriptions in Melvill & Standen (1912) and held in the National Museum Scotland, Edinburgh, we are confident in presenting here the first record of this species outside South Georgia and the South Orkney Islands. In our opinion, it is very likely that Onoba subantarctica wilkesiana (Hedley, 1916) from the same locality as the present study and shown by Engl (2012) on plate 37, fig. 6, is also O. filostria. Onoba wilkesiana described by Hedley (1916) from Commonwealth Bay and illustrated in fig. 77 is by far not as strikingly thick-shelled as O. filostria and is in fact more reminiscent of a bulbous Onoba subantarctica (Thiele, 1912) known from the Kerguelen Islands.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3F89FAB8CD16.taxon	materials_examined	Material examined. • 4 spms, Stn. 2; • 3 spms, Stn. 3; • 1 spm, Stn. 9; • 1 spm, Stn. 10. Type locality. Swain’s Bay (Kerguelen Islands) on a sponge. Bathymetric distribution. 0 – 870 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3F89FAB8CD16.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Crozet Islands, Kerguelen Islands. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C50FFFAFF7B3F89FAB8CD16.taxon	discussion	Remarks. We found 9 individuals in depths between intertidal and 100 m. The species is already known from Maxwell and Admiralty Bays. Not yet fully grown specimens have very faintly visible spiral lines on the last coil in transmitted light (see also Ponder 1983, p. 18 and fig. 18 g).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3A5FFE0FCF90.taxon	materials_examined	Material examined. • 4 spms, Stn. 14. Type locality. McMurdo Sound (Ross Sea), 18 m depth. Bathymetric distribution. 4 – 870 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3A5FFE0FCF90.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3A5FFE0FCF90.taxon	discussion	Remarks. We found only very few individuals in a depth of 70 m. This species was already known from the study area from previous Soviet Antarctic expeditions in depths between 25 and 30 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B38CBFAA5CE7E.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 1 spm, Stn. 10.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B38CBFAA5CE7E.taxon	discussion	Remarks. This slender rissoid gastropod is very similar to Subonoba turqueti (E. Lamy, 1906). It also shows the typical spiral-like surface structure. However, in the more than 300 specimens of S. turqueti found, we were never able to detect strong variability. We found one of these slender specimens in Fildes Strait and one in Ardley Cove in depths of between 60 and 70 m. These two slender specimens were listed separately here for the time being. The shell height was between 2.34 and 2.37 mm. The width was between 1.07 and 1.12 mm. The ratio of height to width was approximately 2.12 to 2.19, which is out of the range of S. turqueti given by us (see previous species) and Ponder (1983). However, if it is the same species as the previous one, it can be described as S. turqueti var. gracilis.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3C98FBABCA6A.taxon	materials_examined	Material examined. • 6 spms, Stn. 2; • 31 spms, Stn. 3; • 2 spms, Stn. 8; • 4 spms, Stn. 10. Type locality. McMurdo Sound (Ross Sea), 23 – 75 m depth. Bathymetric distribution. 4 – 870 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3C98FBABCA6A.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3C98FBABCA6A.taxon	discussion	Remarks. We found several dozen individuals in depths between 35 and 100 m in both Fildes Strait and Ardley Cove. The species is already known from Maxwell and Admiralty Bays.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3E6AF831CCCB.taxon	materials_examined	Material examined. • 155 spms, Stn. 2; • 10 spms, Stn. 3; • 1 spm, Stn. 6; • 12 spms, Stn. 7; • 6 spms, Stn. 8; • 5 spms, Stn. 10; • 100 spms, Stn. 12; • 1 spm, Stn. 13; • 4 spms, Stn. 14; • 15 spms, Stn. 14. Type locality. Wandel (or Booth) Island at the Antarctic Peninsula. Bathymetric distribution. 2 – 385 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3E6AF831CCCB.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6EFFC4FF7B3E6AF831CCCB.taxon	discussion	Remarks. In Maxwell Bay and also in Admiralty Bay, this species was found in large numbers in depths of 5 to 90 metres during previous expeditions. In both Fildes Strait and Ardley Cove, we found several hundred specimens in depths of between 15 and 100 m. The shell height was between 2.29 and 2.55 mm. The width was between 1.26 and 1.32 mm. The ratio of height to width was approximately 1.84 to 1.89, which is in the range given by Ponder (1983).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3D28FBB4CAF9.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 1 spm, Stn. 15. Type locality. Borge Bay of Signy Island (Southern Orkney Islands), 5 – 13 m depth. Bathymetric distribution. 5 – 90 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3D28FBB4CAF9.taxon	distribution	Geographical distribution. ANTARCTICA: -. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3D28FBB4CAF9.taxon	discussion	Remarks. We found this species in depths of 70 to 90 metres. It was already known from the study area from previous Soviet Antarctic expedition in depth of 15 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3872F9DDCDA4.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 1 spm, Stn. 14. Type locality. Scotia Bay (South Orkney Islands), 16 to 18 m depth. Bathymetric distribution. 2 – 97 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3872F9DDCDA4.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3872F9DDCDA4.taxon	discussion	Remarks. We found it both in Fildes Strait and Ardley Cove in a depth of 70 m. This species was already known from the study area from previous Soviet Antarctic expeditions in depths between 5 and 50 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3EDDF965CC12.taxon	materials_examined	Material examined. • 1 spm, Stn. 2. Type locality. Gauss station (Davis Sea), 385 m depth. Bathymetric distribution. 15 – 870 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3EDDF965CC12.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3EDDF965CC12.taxon	discussion	Remarks. We found a single specimen in the Fildes Strait at a depth of 70 m. This species was already known from the study area from previous Soviet Antarctic expedition in depth of 30 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3A28FE6FCFF9.taxon	materials_examined	Material examined. • 2 spms, Stn. 3. Type locality. Gauss station (Davis Sea), 385 m depth. Bathymetric distribution. 94 – 987 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3A28FE6FCFF9.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6CFFC6FF7B3A28FE6FCFF9.taxon	discussion	Remarks. We found it in Ardley Cove in a depth of 100 m. This is probably the first record from King George Island, but it is already known from the neighbouring Bransfield Strait.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B3D28FF46CA95.taxon	materials_examined	Material examined. • 1 spm, Stn. 14. Type locality. Borge Bay on Signy Island (South Orkney Islands), 15 to 30 m depth. Bathymetric distribution. 10 – 130 m. Substrate. Hard bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B3D28FF46CA95.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B3D28FF46CA95.taxon	discussion	Remarks. The maximum height is 26.2 mm. During our study we found one single specimen (height 15 mm) in Ardley Cove in a depth of 70 m. This species was already known from the study area from previous Soviet Antarctic expeditions in depths between 10 and 30 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B3EF9FF5CCCE6.taxon	materials_examined	Material examined. • 1 spm, Stn. 2; • 3 spms, Stn. 10. Type locality. Scotia Bay (South Orkney Islands), 17 to 28 m depth. Bathymetric distribution. 2 – 305 m. Substrate. Hard bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B3EF9FF5CCCE6.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Kerguelen Islands. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: Magellan Strait.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B3EF9FF5CCCE6.taxon	discussion	Remarks. The maximum height of this species is about 9 mm. We found it in Fildes Strait and Ardley Cove in depths between 60 and 70 m. The maximum shell height of our material was 6 mm. This species was already known from the study area from previous Soviet Antarctic expeditions in depths between 15 and 60 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B38E7FF46CE8C.taxon	materials_examined	Material examined. 25 spms, Stn. 9. Type locality. Borge Bay on Signy Island (South Orkney Islands), 2 to 20 m depth. Bathymetric distribution. 0 – 44 m. Substrate. Hard bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B38E7FF46CE8C.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC1FF7B38E7FF46CE8C.taxon	discussion	Remarks. It can reach a maximum height of 23.4 mm. During our study it was quite common on the intertidal station 9 at the Lapidary Point. In contrast to the other Trophon species in the area, which were found exclusively in the sublittoral, T. nucelliformis occurred only in the intertidal and was relatively common there. The maximum shell height was 19 mm. This species was already known from the study area from previous Soviet Antarctic expeditions in depths between 3 and 10 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC3FF7B3BBCF9A9C9A8.taxon	materials_examined	Material examined. • 1 spm, Stn. 2. Type locality. Gauss station (Davis Sea), 385 m depth. Bathymetric distribution. 70 – 752 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC3FF7B3BBCF9A9C9A8.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C6BFFC3FF7B3BBCF9A9C9A8.taxon	discussion	Remarks. We found a single individual in 70 m depth. The shell was somewhat abraded and 6.7 mm high, which is slightly larger than the specimens described so far. This finding is probably the first record for King George Island.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C69FFC3FF7B391EFAB8CE8B.taxon	materials_examined	Material examined. • 1 spm, Stn. 11. Type locality. Gauss station (Davis Sea), 385 m depth. Bathymetric distribution. 4 – 640 m. Substrate. Soft bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C69FFC3FF7B391EFAB8CE8B.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: -. SCOTIA ARC: South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C69FFC3FF7B391EFAB8CE8B.taxon	discussion	Remarks. Although our specimen is badly damaged, the typical features of the species, a wing-shaped mouth opening is clearly visible. We found one specimen in 40 m depth. Antarctophiline alata has already been observed in previous studies in Maxwell Bay in depths between 5 and 20 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C69FFC3FF7B3F11F87BCC72.taxon	materials_examined	Material examined. • 1 spm, Stn. 10.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C69FFC3FF7B3F11F87BCC72.taxon	discussion	Remarks. Several species of the genus Toledonia are quite common in Antarctica (Engl 2012). Although we can somewhat narrow down the potential number of species due to the punctate structure of the embryonic shell (e. g. T. punctata Thiele, 1912 or T. striata Thiele, 1912 are possible), we stick to the generic name of our material. We only found one specimen from 60 m depth. Both Arnaud et al. (1986) and Engl (2012) have already reported the genus from King George Island.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C69FFCDFF7B3BB7FEB8C938.taxon	materials_examined	Material examined. • 6 spms, Stn. 9; • 1 spm, Stn. 12.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C69FFCDFF7B3BB7FEB8C938.taxon	discussion	Remarks. Lack of experience with nudibranchs and the limited material did not allow identification to species level. However, we are relatively certain that the specimens we found belong to the genus Notaeolidia. We found it mainly in the intertidal zone and one specimen also in 15 m depth. A comprehensive revision of the genus was published by Wägele (1990). Notaeolidia depressa Eliot, 1905 was found by Rauschert (1991) in the Fildes Strait in 40 m depth on rocks and is deposited in the Zoological Museum Hamburg (ZMH-MOL- 0019164).	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C67FFCDFF7B3ED9FAB1CCC6.taxon	materials_examined	Material examined. • 1 spm, Stn. 1; • 21 spms, Stn. 2; • 1 spm, Stn. 7. Type locality. East off Bouvet Island, 567 m depth. Bathymetric distribution. 9 – 567 m. Substrate. Hard and soft bottoms.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C67FFCDFF7B3ED9FAB1CCC6.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: Bouvet Island. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: Magellan Strait, Malvinas / Falkland Islands.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C67FFCDFF7B3ED9FAB1CCC6.taxon	discussion	Remarks. We found this species in Fildes Strait and Ardley Cove in depths between 50 and 70 m. It was already known from Fildes Strait by previous studies.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C67FFCDFF7B3972F83CCF1F.taxon	materials_examined	Material examined. • 4 spms, Stn. 5; • 4 spms, Stn. 6; • 2 spms, Stn. 9; • 1 spm, Stn. 15. Type locality. Kerguelen Islands, on stones at low water. Bathymetric distribution. 0 – 380 m. Substrate. Hard bottom and macro algae.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C67FFCDFF7B3972F83CCF1F.taxon	distribution	Geographical distribution. ANTARCTICA: Circum-Antarctic. SUBANTARCTICA: Crozet Islands, Kerguelen Islands, Macquarie Islands. SCOTIA ARC: South Georgia, South Sandwich Islands, South Orkney Islands, South Shetland Islands. SOUTH AMERICA: Magellan Strait, Tierra del Fuego, Malvinas / Falkland Islands.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C67FFCDFF7B3972F83CCF1F.taxon	discussion	Remarks. We found it in Ardley Cove in depths between 0 and 100 m. It was already known from Fildes Strait and Admiralty Bay by previous studies in depths between 0 and 30 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C65FFCFFF7B3D28FAB8CA95.taxon	materials_examined	Material examined. • 1 spm, Stn. 6; • 2 spms, Stn. 7; • 22 spms, Stn. 9; • 1 spm, Stn. 13. Type locality. South Georgia. Bathymetric distribution. 0 – 100 m. Substrate. Hard bottom.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C65FFCFFF7B3D28FAB8CA95.taxon	distribution	Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Georgia, South Shetland Islands. SOUTH AMERICA: -.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
03A587813C65FFCFFF7B3D28FAB8CA95.taxon	discussion	Remarks. We found it in Ardley Cove in depths between 0 and 100 m. It was already known from Fildes Strait and Ardley Cove by previous studies in depths between 3 and 30 m.	en	Zettler, Michael L., Bick, Andreas (2025): Molluscs from a shallow bay of King George Island (Antarctica, South Shetland Islands): An annotated checklist with new distributional records. Zootaxa 5631 (3): 401-450, DOI: 10.11646/zootaxa.5631.3.1, URL: https://doi.org/10.11646/zootaxa.5631.3.1
