Rhiostoma marioni (Ancey, 1898)

Pterocyclos marioni Ancey, 1898: 137, pl. 9, fig. f. Type locality: Luang-prabang, Laos and Mont Hou, Tonkin [Luang Phrabang Province, Laos and Muang Khua District, Phongsaly Province, Laos]. Wood and Gallichan 2008: 64, pl. 25, figs 3, iv (label).

Pterocyclus [sic] marioni: Kobelt 1911: 757.

Material examined.

Syntype NMW 1955.158.24090 from "Luang-prabang, Laos" (1 shell; Fig. 11A). Specimens from Ban Homexay village road to Laos-Thailand border, Ngeun District, Xayaboury Province (Figs 11B, 18E).

Distribution.

Laos (Kobelt 1911).