Prosipho crassicostatus ( Melvill & Standen, 1907 )

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), pp. 401-450 : 436

48. Prosipho crassicostatus ( Melvill & Standen, 1907) [ Fig. 16K ]

Chrysodomus (Sipho) crassicostatus Melvill & Standen, 1907: 138 , figs 10, 10a

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.

Geographical distribution. ANTARCTICA: Antarctic Peninsula. SUBANTARCTICA: -. SCOTIA ARC: South Orkney Islands, South Shetland Islands. SOUTH AMERICA: -.

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.

References. Oliver & Picken (1984), Dell (1990), Engl (2012).

Figures

FIGURE 16. A–D: Subonoba turqueti (E. Lamy, 1906); E–F: Rissoidae indet.; G: Powellisetia deserta (E. A. Smith, 1907); H–I: Proneptunea rufa P. G. Oliver & Picken, 1984; J: Prosipho glacialis Thiele, 1912; K: Prosipho crassicostatus (Melvill & Standen, 1907); L–O: Prosipho spiralis Thiele, 1912. Unless otherwise indicated, the scale is always 1 mm.