Helicter brevicula, Pease, 1869

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 : 254

brevicula Pease, 1869 , Helicter

( Fig. 3C )

Helicter (Leptachatina) brevicula Pease, 1869: 169 .

CURRENT TAXONOMIC STATUS. — Leptachatininae, Leptachatina (Leptachatina) . Valid species.

TYPE MATERIAL. — Lectotype (Fischer-Piette 1950: 72) MNHN IM-2000-30819; paralectotype MNHN IM-2000-30820 (1 spm).

TYPE LOCALITY. — “Ins. Kauai”.

REMARKS

The original description was explicitly based on specimens in the collections of both Pease and Crosse, and noted that the shells had a variable number of whorls (“cinq à six”). Cooke (in Hyatt & Pilsbry 1910 [in 1910-1911]: 24, pl. 8, fig. 54) illustrated a “Cotype” (ANSP 57802). Fischer-Piette (1950: 72) listed an “Exemplaire-type” and a “ paratype ” (now MNHN IM-2000-30819 and MNHN IM-2000-30820, respectively) as well as the “ paratype ” of Cooke, which is here treated as designation of a lectotype and paralectotypes (see introductory text regarding lectotypes). The two MNHN specimens are 7.7 mm (lectotype) and 7.1 mm (paralectotype) in height, almost the exact measurements of the “Exemplaire-type” and “ paratype ”, respectively, of Fischer-Piette. A label of the collection of the Journal de Conchyliologie, associated with these specimens and written at the time of Fischer-Piette, says “type + paratype ”. Johnson (1994: 8) referenced Fischer-Piette’s statement but credited him with having listed the “Measured holotype and paratype ”, and noted Cooke’s “ paratype ” as well as additional “ paratypes ” (MCZ 45195).

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.