By Vermeulen (1994)
"shell white, approximately opaque or slightly translucent. Whorls 3 1/8 - 3 1/2 (tuba not included); top whorls distinctly oblique, hardly elevated; body whorls forming a cyclidrical body, convex, convex, often slightly angularm with the suture well impressed. Constriction rather distinct, gradual. Tuba consisting of approximately 1/2 whorl (rarely somewhat less), touching the body whorls over its entire length, approximately circular in section. Shell with thin radial ribs, which are widely spaced near the top, moderately similar but slightly wider spaced on the lower body whorl and over the area of the constriction, and widely spaced and rather high on the tuba. Ribs crossed by fine spiral striation. umbilicus open, deep, narrow. Aperture with the imaginary plane through the inner peristome tilted 30-45 (-60) degrees with regard to the coiling axis of the body whorls; with the upper margin distinctly protruding beyond the plane perpendicular to the coiling axis of the body whorls as well as through the apex; widely ovate; apertural teeth absent; inner peristome somewhat thickened, slightly reflected; outer peristome usually flaring on the palatal side. Constriction inside with two teeth: one distinct, slightly oblique, short, rather high infracolumellaris, one rather inconspicuous, transverse, long, low palatalis. Measurements.- Height of body whorls 0.8-1.0 mm; width including tuba 1.2-1.5 mm, without tuba 0.9-1.0 mm; height of aperture 0.5 mm; width of aperture 0.5-0.6 mm. "