Leptopoma geotrochoformis (Smith, xxxx)
Merely a junior synonym of Leptopoma trochus Dohrn, 1862
This species has a considerable resemblance to L. undatum, Metcalfe, and L. niahense, Godwin-Austen. It is at once distinguished from the latter by the absence of the constriction behind the labrum, the double peristome, the almost concealed umbilicus, the more convex whorls, and slightly finer sculpture. L. undatum also has the body-whorl constricted behind the lip, but the peripherial keel becomes obsolete a little from it, so that in the present species and L. niahensis. L. undatum is more openly umbilicated and has not a double peristome.” (E. A. Smith, 1895)
E. A. Smith (1895) original descriptions on Leptopoma geotrochiforme - “Testa fere obtecte perforate, trochoidea, ad peripheriam acute carinata, subtus planiuscula, alba; spira conica, acuta; anfractus 6, celeriter crescents, leviter convexi, spiraliter tenuiter striate, lineisque incrementi obliquis, flexuosis, tenuissimis sculpti, ultimus supra et infra carinam concave compressus, antice haud descendens; aperture subcircularis; peristoma duplex, margine externo tenui expanso, ad angulum acuminato, latiore supra quam infra, interno continuo, paulo incrassato.”
Leptopoma geotrochiforme – “Diam. Maj. 22 millim., min. 17, alt. 20; apertura intus 9 longa, 9 ½ lata.” (E. A. Smith, 1895)
Type locality – “Mount Rabong, West Sarawak” (E. A. Smith, 1895)