Opisthostoma cryptodon Vermeulen, 1991 Figure 10D

Opisthostoma cryptodon Vermeulen, 1991: 148-150, fig. 4B.

Type locality.

"SARAWAK. 1st Div.: W of Kpg. Lobang Batu 12.5 km S of Tebakang".

Material examined.

Gunung Doya: ME 8901, ME 8988, ME 9084. Gunung Kapor: ME 0278, ME 9099, ME 9253. Lobang Angin: ME 8980, ME 9141. Gunung Batu: ME 0329.

Distribution in Borneo.

Sarawak: Kuching and Serian divisions. Endemic to Borneo.

Remarks.

Living snails were observed foraging among leaf litter and plant debris near the cliff in lowland limestone forest.