Macrochlamys tersa (Issel, 1874) Figures 22E, 51B

Nanina (Macrochlamys) tersa Issel, 1874: 399-400, pl. 5, figs 1-4.

Type locality.

“Borneo” .

Material examined.

Gunung Doya: ME 8936, ME 8957, ME 9037. Gunung Kapor: ME 2880, ME 2882, ME 2945, ME 3040, ME 8089, ME 8771, ME 8966, ME 9048, ME 9620. Kampung Padang Pan: ME 6680. Lobang Angin: ME 9142, ME 9152, ME 9272. Gunung Batu: ME 1858, ME 2855, ME 2868, ME 8827.

Distribution in Borneo.

Sarawak: Kuching, Serian, and Miri divisions. Sabah: Kudat, West Coast, Interior, and Tawau divisions. Endemic to Borneo.

Remarks.

Living snails were observed foraging among leaf litter and plant debris near the cliff in a lowland limestone forest. It differs from other Bornean Macrochlamys species by having a moderately sized pale brown shell with very fine closely spaced spiral grooves.