Shell small, turbinate, umbilicate, base biearinate. Sculpture consisting of fine, subequidistant, blunt, incremental axial striae, 2 carinae on the base, the upper one arising from the junction of the outer lip with the whorl, and terminating a little below the middle of the outer lip ; the lower rib departs from the middle of the body-whorl between the margins of the aperture, and ends at the distal side of the basal lip ; no spiral striation is present. Colour fulvous to brown. Epidermis thin, slightly shining ; there may be axial membranaceous plaits, but in the only specimen before me they have evidently been lost. Spire conical, of the same height as the aperture, apex obtuse. Proloconch consisting of 1 whorl, which is globular and smooth. Suture deeply impressed. Aperture circular. Peristome slightly reflexed and callous, but sharp ; notch at the suture very indistinct. Columella concave, partly concealing the umbilicus, which is deep and of about J mm. diameter. The umbilical tract immersed and margined by the lower carina. Operculum thin, circular, multispiral, with membranous outer and central processes.
Diameter, 4-5 mm. ; height, 5 mm.