Shell subperforated, slender, turreted, rather solid. Sculpture consisting of close axial striae, the later whorls with distant fine membranaceous folds, much closer together on approaching the aperture. Colour blackish-brown with a lighter basal band, or with alternating dark-brown and yellowish-white streaks, the base brown. Epidermis thin, but little shining. Spire elongate, obtuse at the apex, more than twice the height of the aperture. Protoconch globose, of 2 smooth and convex whorls. Whorls 7-7,5, moderately convex, the last indistinctly angled ; base flatly convex, keel round the umbilicus absent or but slightly indicated. Suture impressed, slightly plicate. Aperture vertical, angularly oval. Peristome continuous, double, the inner one continuous, a little elevated, the outer one narrowly expanded, inflexed. Perforation a mere chink, or closed. Operculum typical. Diameter, 3-6 mm. ; height, 9 mm. (4 mm. by 8,5 mm. to 5 mm. by 11 mm.).
New Zealand: Kakepuku (Hochstetter) ; Papakura ; Whangarei ; Kamo ; Te Reinga (C. Cooper) ; Kaihu, Hokianga ; Waiwera (H. S.).