Helix spirizona, Ferussac, 1825

Cowie, Robert H., Héros, Virginie, Yeung, Norine W. & Hayes, Kenneth A., 2016, Annotated catalogue of types of Hawaiian land and freshwater snails (Mollusca: Gastropoda) in the Muséum national d’Histoire naturelle, Paris, with lectotype designations, Zoosystema 38 (2), pp. 245-266 : 260

spirizona Férussac, 1825 , Helix

( Fig. 4H )

Helix spirizona Férussac in Quoy & Gaimard, 1825: 480.

Helix (Cochlogena) spirizona Férussac, 1821a: 60 ; 1821b: 56 [nomen nudum].

Achatina spirizona – Deshayes 1851: 196, pl. 155, figs 14-15.

CURRENT TAXONOMIC STATUS. — Amastrinae, Amastra (Paramastra Hyatt & Pilsbry, 1911). Valid species.

TYPE MATERIAL. — Lectotype (here designated) MNHN IM-2000- 30839; paralectotypes MNHN IM-2000-36736 (2 spms); possible paralectotypes MNHN IM-2000-30840 (2 spms), MNHN IM- 2012-36735 (3 spms).

TYPE LOCALITY. — “probablement […] les îles Sandwich”.

REMARKS

The largest specimen in the original lot, with which a typical black-bordered Férussac label is associated, closely matches the illustrations of Deshayes (1851: pl. 155, figs 14, 15), notwithstanding the hole in the shell (for stringing it as a necklace or other ornamentation) that is not depicted; it is here selected as the lectotype ( MNHN IM-2000-30839) ; the remaining specimens in the original lot are paralectotypes ( MNHN IM-2000-36736). Labels associated with the other two lots ( MNHN IM-2000-30840, MNHN IM-2012-36735) indicate that the specimens were in the Deshayes collection, and therefore may have been in Férussac’s collection. They are here considered possible paralectotypes .

Figures

FIG. 4.— Amastridae:A, Helicteres laevis Pease,1870,lectotype MNHN IM-2000-30828, 9.2 mm;B, Helix luteola Férussac,1825,holotype MNHN IM-2000-30829, 17.0 mm; C, Helicter pachystoma Pease, 1869,lectotype MNHN IM-2000-30830, 13.0 mm; D, Helicteres rugulosa Pease,1870,lectotype MNHN IM-2000-30831, 12.8 mm; E, Helicter simplex Pease, 1869, lectotype MNHN IM-2000-30834, 7.3 mm; F, Helicter solida Pease, 1869, syntype MNHN IM-2000-30836, 14.0 mm; G, Helicteres sphaerica Pease, 1870, lectotype MNHN IM-2000-30837, 10.1 mm; H, Helix spirizona Férussac, 1825, lectotype MNHN IM-2000-30839, 22.3 mm; I, Helicteres tenebrosa Pease, 1870, lectotype MNHN IM-2000-30841, 12.7 mm. Scale bars: 5 mm. Dimensions given are shell height.