Shell minute, conical, subperforated, rufous, thin and fragile, semi-transparent. Sculpture consisting of close white membranaceous and oblique radiate plaits, directed slightly backward ; there are about 15 per millimetre on the last whorl ; interstices microscopically spirally striate, more distinct on the base. Colour uniformly rufous. Epidermis thin, horny, not shining. Spire acutely conical, with a rather sharp apex, higher than the aperture. Protoconch papillate, of 2 whorls, which are finely spirally striate and strongly convex. Whorls 5, the last occupying nearly half of the total height, strongly convex, rounded at the periphery; base convex. Suture deep. Aperture oblique, circular. Peristome simple, straight, the margins not meeting, but united by a thin parietal callosity, no notch at the suture. Columella arcuate, thin, a little reflected over the narrow perforation, which in adult specimens is entirely covered. Operculum unknown. Diameter, 1,25 mm. ; height, 1,75 mm. New Zealand: Howick, type (Major Broun); Hunua Range; bush near Napier (A. G. Clark).