Helix jeffreysiana Pfeiffer, 1853

Pl. 9, fig. C

Pfeiffer, 1853a. Monographia heliceorum viventium, 3: 105.

Type material: Syntype (1), NHMUK 1978111 (dry shell material); ex Museum Cuming (Acc. no. 1829) .

Label details: ‘ Helix jeffreysiana New Zealand’—in Pfeiffer’s handwriting.

Type locality: ‘Nova Seelandia’ (Pfeiffer 1853a: 105).

Previous illustrations of type material: Reeve (1852 [in 1851–1854]: pl. 130, fig. 788), Tryon (1885 [from Reeve 1852]: pl. 26, fig. 26).

Remarks: Helix jeffreysiana Reeve, 1852 and H. jeffreysiana Pfeiffer, 1853 are based on the same type material, which H. Cuming had obtained from the Australian-based naturalist Frederick Strange. Pfeiffer evidently intended to publish the original description of this species in the Proceedings of the Zoological Society of London issue for 1851 (see Reeve 1852 [in 1851–1854]: species 788; Pfeiffer 1853a: 105), but publication was delayed until 1854 (Pfeiffer 1854b: 148), and was pre-empted by Reeve (1852 [in 1851–1854]: species 788). Authorship previously attributed to Pfeiffer (1853) (e.g., Hector 1873: 13; Hutton 1880: 24; Suter 1913b: 789; Powell 1979: 348; Spencer et al. 2009: 218), but Reeve (1852) has priority.

Taxonomy: Helix jeffreysiana Pfeiffer, 1853 is a junior primary homonym and an objective junior synonym of Delos jeffreysiana (Reeve, 1852) N. syn.