Phaedusa borneensis (L. Pfeiffer, 1854) Figures 44C, 50C

Clausilia borneensis L. Pfeiffer, 1854a: 296.

Type locality.

"Sarawak, Borneo".

Material examined.

Gunung Doya: ME 2904, ME 8912, ME 9153. Gunung Kapor: ME 2890, ME 2891, ME 2892, ME 2893, ME 2944, ME 5975, ME 8784, ME 9257. Gunung Batu: ME 2897, ME 2898.

Distribution in Borneo.

Sarawak: Kuching, Serian, and Miri divisions. Endemic to Borneo.

Remarks.

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