Shell small, thin, elevated, slightly asymmetrical. Sculpture: Fine dense concentric threads, crossed by fine and close radiate striae, minutely decussating the surface, and indistinct anteriorly. Colour opaque - white. Apex smooth, inrolled, deciduous; summit a little within the posterior margin. Posterior slope steep, a little concave ; slightly exceeding one-third of the height of the shell; base convex. Suture, impressed. Aperture a little oblique, subcircular. Peristome simple, straight. Columella slightly concave, white. Inner lip spreading over the umbilicus, sealing it up more or less completely. The callus on the penultimate whorl unites the margins, and is conspicuous. Diameter, 1 mm. ; height, 2 mm. New Zealand: North Island : Bay of Islands (Purchas, Hochstetter) : Waro; Whangarei; vicinity of Auckland; Wairangi, Waikato; Hunua Range ; Mount Pirongia ; Forty-mile Bush. South Island : Kenepuru Sound ; Nelson ; YVairoa Gorge ; Greymonth ; Riccarton Bush, near Christchurch.
Found in native bush in very moist situations, near creeks or swamps, under stones, rotten wood, &c.