Schistoloma messageri ( Bavay & Dautzenberg, 1909 )

Páll-Gergely, Barna, Nguyen, Phi Khanh & Chen, Yansen, 2019, A review of Vietnamese Schistoloma Kobelt, 1902 with a list of all known species of the genus (Caenogastropoda: Cyclophoroidea: Pupinidae), Raffles Bulletin of Zoology 67, pp. 322-327 : 325

Schistoloma messageri ( Bavay & Dautzenberg, 1909)

( Fig. 1B )

Coptochilus messageri Bavay & Dautzenberg, 1909: 286 , plate 11, figs 10–11 (type locality: “ Region de Lao-Kay ”).

Types examined. Tonkin, Lao Kay, Coll. C. Bosch ex coll. H. Rolle, SMF 192263 /4 shells (labelled as syntype, Fig. 1B ) .

Diagnosis. A large Schistoloma species with smooth, elongate-ovoid shell having a strong periumbilical keel. Differs from Schistoloma cochinchinense by the smaller, more slender shell, and more prominent keel.

Distribution. Schistoloma cochinchinense is known from Northern Vietnam (Lao Kay Province).

Figures

Fig. 1. Shells of Schistoloma Kobelt, 1902. A, Schistoloma cochinchinense (Rochebrune, 1882), HNHM 103478 from Ðồng Nai Province, Vietnam; B, Schistoloma messageri (Bavay & Dautzenberg, 1909), labelled as syntype SMF 192263; C–F, Schistoloma inermis (Bavay & Dautzenberg, 1909). C, syntype MNHN-IM-2000-28067; D, syntype SMF 192262; E, holotype of Pinteria croesus Varga, 1972, HNHM 11895; F, specimen in coll. HA from Yunnan, China. Photographs by: M.C. Gutierrez (C, downloaded from the website of the MNHN) and B. Páll-Gergely (A, B, D–F). Scale bar = 10 mm.