Helix gravida, 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 : 256

gravida Férussac, 1825 , Helix

( Fig. 3G )

Helix gravida Férussac in Quoy & Gaimard, 1825: 478, pl. 68, figs 4, 5.

CURRENT TAXONOMIC STATUS. — Amastrinae, Laminella Pfeiffer, 1854 . Valid species.

TYPE MATERIAL. — Lectotype (here designated) MNHN IM-2000- 30825; paralectotype MNHN IM-2000-30826 (1 spm); possible paralectotype MNHN IM-2000-30827 (1 spm).

TYPE LOCALITY. — “les îles Sandwich”.

REMARKS

The species was not listed by Férussac (1821a, b). A typical black bordered Férussac collection label is associated with the original lot. The larger of the two specimens in the original lot matches that illustrated by Férussac in Quoy & Gaimard (1825, pl. 68, figs 4, 5) exactly in shell height and is here designated as the lectotype (although the illustration lacks the distinct repair scar on the body whorl); the other specimen is a paralectotype. The species was treated and illustrated by Deshayes (1851: 192, 193, pl. 155, fig. 3). Labels incorrectly give the locality as the Mariana Islands because Laminella (and indeed the family Amastridae ) is endemic to the Hawaiian Islands. A label associated with MNHN IM-2000-30827 says “Coll. Férussac. 1837”, indicating that it was in the Férussac collection (the date perhaps referring to when Férussac’s collection was catalogued after his death in 1836). This label also identifies it as Achatinella straminea Reeve, 1850 (in 1849-1851: pl. 5, fig. 38), and a “var” of gravida , although Férussac in Quoy & Gaimard (1825: 478) did not mention a variety.

Figures

FIG. 3. — Amastridae Pilsbry, 1910: A, Helicteres antiqua Pease, 1870, lectotype MNHN IM-2000-30817, not measured; B, Helicteres balteata Pease, 1870, lectotype MNHN IM-2000-30818, 11.8 mm; C, Helicter brevicula Pease, 1869, lectotype MNHN IM-2000-30819, 7.7 mm; D, Helicteres costulosa Pease, 1870, lectotype MNHN IM-2000-30821, 14.0 mm; E, Helicter cylindrata Pease, 1869, lectotype MNHN IM-2000-30822, 8.2 mm; F, Helicter erecta Pease, 1869, lectotype MNHN IM-2000-30824, 14.6 mm; G, Helix gravida Férussac,1825, lectotype MNHN IM-2000-30825, 22.5 mm, fig. 4 of Férussac in Quoy & Gaimard (1825); H, Achatinella helvina Baldwin, 1895, possible syntype MNHN IM-2000-30133, 15.8 mm, fig. 30 of Baldwin (1895). Scale bars: A-F, 1 mm; G, 10 mm; H, 5 mm. Dimensions given are shell height; reproductions of original illustrations not to scale.