Platycochlium Laidlaw, 1950

Páll-Gergely, Barna, Hunyadi, András, Grego, Jozef, Sajan, Sheikh, Tripathy, Basudev & Chen, Zhe-Yu, 2020, A review of the Diapheridae (Gastropoda: Eupulmonata: Streptaxoidea), with special emphasis on India and Myanmar, Raffles Bulletin of Zoology 68, pp. 682-718 : 696

Platycochlium Laidlaw, 1950

Platycochlium Laidlaw, 1950: 370 .

Platycochlium — Zilch, 1960: 560.

Platycochlium — Richardson, 1988: 243.

Platycochlium — Schileyko, 2000: 785.

Type species. Platycochlium sarawakense Laidlaw, 1950 , by original designation.

Diagnosis. “Shell colourless, translucent when fresh, later white, low conical to almost discoidal in frontal view. Whorls with 4–5 varices next to the peristome (approximately one per ⅓–½ whorl in the last whorls), each varix preceded by a number of ribs, the ribs crossed by a fine, concentric striation. Umbilicus wide, orbicular to elliptic. Aperture subtriangular with the parietal side concave. Peristome reflected, with a knob-like thickening on the palatal side, above which is a shallow sinus. Teeth four: one angularis, a sinuous lamella starting deep inside and ending in a thick knob; one short basalis; two deeply set palatales, the upper one hidden behind the palatal swelling of the peristome.” ( Vermeulen, 1991).

Distribution. Endemic to Borneo.