By Vermeulen (1994)
"spire cylindrical. Apex oblique. Whorl 3 5/8 - 3 7/8, convex; last whorl rounded. Constriction with a long parietalis which continues into tuba; with distinct, short angularis covering the suture, with a transverse palatalis, with a columellaris. Tuba touching the spire over its entire length, close to the constriction with a distinct swelling along the suture on which the radial ribs continue, bordered by a distinct, semi-circular furrow opening to the right side if the shell is observed in front view; tuba with a slight second swelling close to the suture just beyond the first one; tuba rounded below. Radial ribs not sinuous, on the spire closely spaced (7-10 ribs/0.5 mm on the penultimate whorl), those on the tuba rather closely placed (5-7 ribs/0.5 mm half-way the tuba). Spiral striation present, fine. Umbilicus open, 0.15 mm across. Aperture tilted30-60º with regard to the coiling axis, its upper margin widely above the level of the apex, elliptic with the continuation of the parietalis just visible along its lower side if the shell is observed in subapical view. Peristome double, outer peristome spreading beyond the inner but gradually narrowed towards, and absent along the right side of the aperture, slightly widened along the upper right side and the lower side; inner peristome distinctly protruding from the outer, somewhat spreading. Spire: height 1.0-1.1 mm and width 1.0 mm; index 1.0-1.1. Total width about 1.3-1.4 mm. Height aperture 0.3-0.35 mm; width 0.5 mm."