Helicteres turgidula, Pease, 1870

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 : 261

turgidula Pease, 1870 , Helicteres

( Fig. 5C )

[ Helicteres ] (Leptachatina) turgidula Pease, 1870: 89 .

Achatinella (Leptachatina) turgidula – Crosse 1876: 96, pl. 4, fig. 5].

CURRENT TAXONOMIC STATUS. — Leptachatininae, Leptachatina (Leptachatina) pachystoma ( Pease, 1869) , subspecies (see Cowie et al. 1995: 128).

TYPE MATERIAL. — Lectotype (here designated) MNHN IM-2000- 30845.

TYPE LOCALITY. — “insula Kauai”.

REMARKS

Considered by Pease as a species of “ Hélictères ” (i.e. genus Helicter , though the formal genus name was not used and it is therefore placed in square brackets above) in the subgenus Leptachatina (see introductory text regarding species of Pease). The original description was not explicitly based on only a single specimen but neither does it imply the existence of syntypes. Fischer-Piette (1950: 149) listed the specimen illustrated by Crosse (1876: pl. 4, fig. 5) as the “ Holotype ” and a label of the collection of the Journal de Conchyliologie, associated with this specimen and written at the time of Fischer-Piette, also says “ Holotype ”. Johnson (1994: 26) simply referenced Fischer-Piette’s statement, while also noting additional “ paratypes ” (MCZ 45182, MCZ 45183). Neither Fischer-Piette’s nor Johnson’s treatment constituted a lectotype designation (see introductory text regarding lectotypes). A label associated with the MNHN specimen indicates that it was received from Pease in 1869. The specimen matches Crosse’s illustrations, although the clear demarcation between the whitish lower part of the body whorl and the remainder of the shell is not so distinct in the actual specimen. It is here designated as the lectotype.

Figures

FIG. 5. — Amastridae: A, Helix textilis Férussac, 1825, possible syntype MNHN IM-2000-30770, 15.0 mm; B, Helix tristis Férussac, 1825, lectotype MNHN IM- 2000-30843, 19.3 mm, fig. 6 of Férussac in Quoy & Gaimard (1825); C, Helicteres turgidula Pease, 1870, lectotype MNHN IM-2000-30845, 13.7 mm; D, Helix turritella Férussac, 1821, possible syntype MNHN IM-2000-30846, 18.5 mm; E, Helix ventulus Férussac, 1825, lectotype MNHN IM-2000-30848, 12.9 mm. Ellobiidae: F, Auricula sandwichiensis Souleyet, 1852, lectotype MNHN IM-2000-30849, 11.5 mm, figs 31 & 32 of Souleyet (1852). Endodontidae: G, Endodonta henshawi Ancey, 1904, syntype MNHN IM-2000-9654, 2.1 mm (shell width), fig. 15 of Ancey (1904b). Lymnaeidae: H, Lymnaea oahouensis Souleyet, 1852, lectotype MNHN IM-2000-30850, 11.7 mm, figs 39 & 41 of Souleyet (1852). Punctidae: I, Endodonta horneri Ancey, 1904, syntype MNHN IM-2000-9655, 1.0 mm (shell width), fig. 11 of Ancey (1904b). Scale bars: A-F, H, 5 mm; G, I, 1 mm. Dimensions given are shell height unless otherwise stated; reproductions of original illustrations not to scale.