Lymnaea oahouensis, Souleyet, 1852

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 : 264

oahouensis Souleyet, 1852 , Lymnaea

( Fig. 5H )

Lymnaea Oahouensis [sic] Souleyet, 1852: 527, pl. 29, figs 38-41.

CURRENT TAXONOMIC STATUS. — Lymnaeidae , Lymnaea ( Pseudisidora Thiele, 1931 ) rubella Lea, 1841, synonym.

TYPE MATERIAL. — Lectotype (here designated) MNHN IM-2000- 30850 (ex MNHN IM-2000-27685); paralectotypes: MNHN IM-2000-27685 (3 spms), MNHN IM-2000-27699 (10 spms).

TYPE LOCALITY. — “ruisseaux de l’île Oahou (îles Sandwich)”.

REMARKS

The original description indicates both dextral and sinistral individuals, although the plates only illustrate dextral individuals. All the MNHN specimens are dextral. The largest specimen is a precise match in size and shape for Souleyet’s fig. 41 (presumed life-size shell). The specimen is 11.7 mm in height (Souleyet’s description says 12 mm) and 6.5 mm in width (Souleyet’s measurement of 9 mm is erroneous). This largest specimen is here designated as the lectotype ; the remaining 13 specimens are paralectotypes. Those in MNHN IM-2000-27699 are explicitly labelled as having been obtained from Gaudichaud in 1838, the year after his return from the voyage of La Bonite .

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.