Craspedotropis borneensis (Godwin-Austen, 1889)  

Godwin-Austen (1889) original descriptions on Jerdonia? borneensis – “Shell dextral, pyramidal, turreted, strongly lirate, openly umbilicated; sculpture 5 strong longitudinal ribs on the whorl, the two below and the three above separated by a wider interval; two strong closely placed longitudinal ribs run with the angulate margin of the umbilicus, and one fine rib within it; colour pale greenish horny; spire high; apex rather pointed; suture angulately open; whorls 6, angularly convex; aperture oval, oblique, not double; peristome simple, with a marked sinuation or shallow notch on the lower margin; columellar margin rounded and slightly thickened. Operculum horny, multispiral, black-brown, with a pale centre, with a central minute hollow showing dark upon it, like the bull's eye of a target.”

Kobelt (1902) descriptions on Ditropis (Ditropis) borneensis – “Schale offen genabelt, kegelförmig, mit 3 oberen und 2 unteren, durch einen glatten Zwischenraum getrennten Spiralreifen auf jeder Windung, letzte um den Nabel kantig und mit 2 Kielen, ein dritter im Nabel; Gewinde hoch mit ziemlich spitzem Apex ; 6 gewölbte, kantige Windungen, letzte unten flach, rechtwinklig in den Nabel abfallend; Mündung schräg, eiförmig; Mundrand einfach, oben leicht ausgebuchtet; Spindelrand abgerundet, leicht verdickt. Deckel mit vielen Windungen, braunschwarz, mit blasserem Zentrum und winzigem Zentralloch.”

Vermeulen (1999) descriptions on Craspedotropis borneensis – “Spire high conical. Whorls 5 ½, convex. Suture depressed. Radial sculpture: growth lines and densely placed riblets (35/mm on the last whorl) which are most distinct close to the suture. Spiral sculpture: distinct, high ridges, 9 on the last whorl (6 regularly spaced on the lateral surface of the whorl, 2 on the basal surface, but at some distance from the lowermost lateral one, and 1 in the umbilicus); in between the ridges a fine striation that is least conspicuous near the suture. Umbilicus rather wide. Aperture more or less ovate, with a shallow sinus basally. Peristome with a slight lip on the palatal and the basal side, at some distance from the margin. Periostracum greenish, close to the suture raised to minute crests over the radial riblets, without further appendages. Operculum corneous, free whorl-margins widened and flattened so that together they form a second corneous layer at some distance from the first. No calcareous matter present.”