Plectostoma wallacei wallacei Ancey, 1887 Figures 12F, 48B

Plectostoma wallacei Ancey, 1887: 276-277.

Type locality.

“Borneo” .

Material examined.

Gunung Doya: ME 0239, ME 9697. Gunung Kapor: ME 0218, ME 0240, ME 0242, ME 0243, ME 0244, ME 2915, ME 8066, ME 8482, ME 8759, ME 8767, ME 8780. Lobang Angin: ME 0246, ME 8730, ME 8733, ME 8743. Gunung Batu: ME 0245, ME 0247. Gunung Stulang: ME 5898. Kampung Padang Pan: ME 6669.

Distribution in Borneo.

Sarawak: Kuching and Serian divisions. Endemic to Borneo.

Remarks.

Living snails were observed foraging on the wet vertical limestone rock surfaces covered with mosses and lichens.