Shell minute, conical, solid, imperforate. Whorls 5, flattened, suture canaliculate. Spire about 1 1/2 times the aperture in height. Protoconch of 1,5 whorls, reddish-brown and sculptured with minute grains in many very close spiral lines; subsequent whorls light yellowish-brown with longitudinal costae separated by narrower furrows; above the suture a strong revolving thread; on the last whorl the upper half carrying about 22 longitudinal costae; the periphery encircled by a pair of strong spiral cords; base flattened and bearing an additional cord. Except for the strong costae and ribs only fine lines of growth. Aperture oblique, rounded-ovate; peristome thick, continuous, and double, with an interior swelling rising from above and below and extending beyond the primary lip externally. Columella oblique, sinuous; columellar lip sunk, brownish. Dimensions: H. 1.5, br. 0.8 mm. — Locality: North Island. Operculum ovate, with a thin outer layer and a thick inner one forming a crest-like edge on the columellar side.