Helix umbraculum Pfeiffer, 1854

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 : 75

Helix umbraculum Pfeiffer, 1854

Pfeiffer, 1854. Proceedings of the Zoological Society of London, 20 (1852): 147.

Type material: This species was probably described from one or more specimens in the Cuming collection, as suggested by the reference to Frederick Strange by Pfeiffer (1853a: 40); type material not found in NHMUK collections in 2018, and whereabouts unknown .

Type locality: ‘New Zealand’ ( Pfeiffer 1854b: 147).

Remarks: Pfeiffer evidently intended to publish the original description of this species in the Proceedings of the Zoological Society of London issue for 1851 (see Pfeiffer 1853a: 40 —nomen nudum), but publication was delayed until 1854 ( Pfeiffer 1854b: 147). There are no published illustrations of the type material.

Current Taxonomy: Treated as a junior synonym of Nanina mariae Gray, 1843 by Pfeiffer (1853a: 40), Gray (1855: 135), Martens (1873: 11), Hutton (1884b: 196) and Suter (1913b: 740).