Helix pachystyla Pfeiffer, 1845

Brook, Fred J. & Ablett, Jonathan D., 2019, Type material of land snails (Mollusca: Gastropoda) described from New Zealand by taxonomists in Europe and North America between 1830 and 1934, and the history of research on the New Zealand land snail fauna from 1824 to 1917, Zootaxa 4697 (1), pp. 1-117 : 85

Helix pachystyla Pfeiffer, 1845

Pl. 11, fig. A

Pfeiffer, 1845. Proceedings of the Zoological Society of London, (1845): 71.

Type material: Syntype (1), NHMUK 1982233 (dry shell material); ex Museum Cuming (Acc. no. 1829) .

Label details: ‘No. 29. H. pachystyla Pfr. , Australia, 1 in number, M.C’.

Type locality: ‘Port Curtis, Queensland’ ( Smith 1992: 173, after Reeve 1852 [in 1851–1854]: species 364); incorrectly stated as ‘New Zealand’ by Pfeiffer (1845: 71).

Previous illustrations of type material: Reeve (1852 [in 1851–1854]: pl. 70, fig. 364), Pfeiffer (1853 [in 1852–1860]: pl. 150, fig. 7).

Remarks: Records from New Zealand by Pfeiffer (1845: 71, 1848: 19, 1868a: 226) and Pfeiffer & Clessin (1881: 193) were in error. This is an eastern Australian species, as noted by Reeve (1852 [in 1851–1854]: species 364).

Current Taxonomy: Listed as Xanthomelon pacystylum ( Pfeiffer, 1845) by Smith (1992: 71) and Stanisic et al. (2010: 450).

Distribution: Southeastern Queensland, Australia ( Stanisic et al. 2010).