Helicter cylindrata, 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 : 256

cylindrata Pease, 1869 , Helicter

( Fig. 3E )

Helicter (Leptachatina) cylindrata Pease, 1869: 168 .

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

TYPE MATERIAL. — Lectotype (Fischer-Piette 1950: 72) MNHN IM-2000-30822; paralectotype MNHN IM-2000-30823 (1 spm).

TYPE LOCALITY. — “Ins. Kauai”.

REMARKS

The original description was explicitly based on specimens in the collections of both Pease and Crosse. A “cotype” in ANSP was illustrated by Cooke (in Hyatt & Pilsbry 1910 [in 1910- 1911]: 19, pl. 8, figs 63, 64). Fischer-Piette (1950: 72) noted an “Exemplaire-type (8.2 mm)” and a “ paratype de 7 mm ” (nowMNHN IM-2000-30822 and MNHN IM-2000-30823, respectively), and in reference to the ANSP “ paratype ” already illustrated (by Cooke) stated that it would not be useful to illustrate “le type” (i.e. the “exemplaire-type”). This constitutes a valid lectotype designation (see introductory text regarding lectotypes). A label of the collection of the Journal de Conchyliologie and written at the time of Fischer-Piette says “type + paratype ”, and an earlier label says “type”. There were two intact specimens in the original MNHN lot (i.e. lectotype and paralectotype), but also a broken specimen that was not mentioned by Fischer-Piette ; this specimen is also considered a paralectotype. Johnson (1994: 11) selected the ANSP specimen ( ANSP 57806 ) as lectotype, noting the MNHN specimens as paralectotypes ; this designation is not valid as it is here considered that the earlier designation of Fischer-Piette was valid.

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.