Morphology:
By van Benthem Jutting (1952)
"shell short-cyclindrical, white. First whorl smooth, following ones ornamented with fine white transverse ribs, placed close together on the upper whorls, but more distantly on the last one. Not shinning or transparent. No spiral striation visible. Whorls 4, convex. Top slightly oblique on the axis of the shell. Apex comewhat emerging. Last whorl transversely constricted in the middle, then widening again towards the aperture and twisted backward, giving a false impression of a sinistral shell. Suture depp. umbilicus open, but not wide. Aperture round, vertical, adnate. Peristome continuous, circular or rounded-triangular, duplex. Reaching almost up to the suture between the second and thrid whorls."
Taxonomic name: