Shell, elongate-ovate, somewhat translucent, bluish-white. Nuclear whorls small, deeply, very obliquely immersed within the first of the succeeding turns. Post-nuclear whorls inflated, flattened in the middle, rounded strongly at the summit and the suture, marked by decidedly sinuous, exceedingly fine lines of growth and fine spiral striations; the latter are less strongly developed on the posterior two-thirds between the sutures than on the anterior third and on the base. Sutures strongly constricted. Periphery of the last whorl and base inflated, well rounded, the latter deeply and strongly umbilicated. Aperture oval; posterior angle acute; outer lip thin, showing the external sculpture within; columella very slender, strongly curved and slightly revolute, provided with a very faint, oblique fold a little anterior to its insertion; parietal wall glazed with a thin callus.
There are three specimens of this species, two of which are in the Geological Survey Museum collection at Ottawa, and one (Catalogue No. 211541) is in the United States National Museum. All three were dredged in 18 to 28 fathoms at Ship channel, Barkley sound, Vancouver island, B.C. The specimen figured has five post-nuclear whorls, and measures: length, 3.8 mm., diameter, 1.9 mm.