Distribution
North, South, Chatham and Stewart Islands (with distributional gap from southern Westland across to mid-Canterbury, most of Otago and Southland and western Fiordland).
New Zealand Threat Classification System
Not Threatened
Bio Status
Indigenous (Endemic)
Description
Shell small, about 4.8mm wide and 3.2mm high at 4.5 whorls, depressed to domed, widely umbilicated, rather thin, obliquely and more sparsely ribbed, transparent pale yellowish white with brown to dark brown maculations, these of lighter tint on the base. Spire height variable, ranging from a little elevated to domed. Protoconch of 1.5 to 1.75 convex and almost smooth whorls, weak axial growth wrinkles are just detectable. Whorls convex, slowly increasing, the last lightly angled at the periphery; base convex. Sculpture consisting of prominent oblique flexuous axials, distinctly retractive at the periphery; the interstices with closely spaced fine secondary axials. Axials traversed by spiral lirae, creating a fine clathrate sculpture with micro-beads formed at intersections. Suture impressed. Aperture diagonal, lunately rotund. Peristome simple, straight. Columella short, vertical, arcuate. Inner lip a little expanded, not thickened, forming a thin shining glaze on the parietal wall. Umbilicus broad, conical, width about one third of max. shell diameter.
Habitat
Litter dweller in a wide range of habitats including drier, open and more modified habitats.
