Helix (Cochlogena) polygramma S. Moricand, 1836

Breure, Abraham S. H., 2016, Annotated type catalogue of the Orthalicoidea (Mollusca, Gastropoda, Stylommatophora) in the Muséum d’histoire naturelle, Geneva, Revue suisse de Zoologie 123 (1), pp. 57-103 : 79

Helix (Cochlogena) polygramma S. Moricand, 1836

Figs 136-137

Helix (Cochlogena) polygramma S. Moricand, 1836: 436 , pl. 2 figs 12-14.

Type locality: [ Brazil, Bahia] “les grand bois à Caxoeira ”.

Label: “ Bahia, Caxoeira”, in Moricand’s handwriting.

Dimensions: “Hauteur, 13 mill.; largeur, 5 mill.”; figured specimen herein H 14.0, D 5.83, W 5.8.

Type material: MHNG-INVE-64561 , four syntypes (ex Blanchet, Moricand coll.).

Remarks: Moricand did not state on how many specimens his description was based. This species was hitherto considered as belonging to Leiostracus Albers, 1850 ( Simone, 2006: 123) , but this small-sized species with its fine, axial riblets which superficially appear as colour streaks, and the dark patch around the umbilicus is here placed in the genus Drymaeus Albers, 1850 .

Current systematic position: Bulimulidae , Drymaeus (Mesembrinus) polygrammus (S. Moricand, 1834) (comb. n.).

Figures

Fig. 135. Bothriembryontidae. Placostylus porphyrostomus monackensis (Crosse, 1888), possible syntype of Bulimus duplex major Gassies, 1871, MHNG-INVE-64837 (H = 88.0). Figs 136-137. Bulimulidae. (136-137) Drymaeus (Mesembrinus) polygrammus (S. Moricand, 1836), syntype, MHNG-INVE-64561 (H = 14.0). Fig. 138. Amphibulimidae. Dryptus pardalis (Férussac, 1821), syntype, MHNG-INVE-60142 (H = 70.2). Fig. 139. Orthalicidae. Liguus fasciatus (Müller, 1774), paratype of Liguus fasciatus archeri Clench, 1934, MHNG-INVE-64921 (H = 54.5).