Shell white, chalky. Whorls 5, rounded, including a smooth protoconch of about one whorl and a half. Sculpture : Longitudinally vertically ribbed, the ribs strong right up to the suture and persisting faintly down the base ; body-whorl with about nine ribs. Strong spirals cross the ribs, two on the second whorl, three above the aperture, a fourth and faint fifth on the body-whorl. The sutures of the early whorls are sharp, of those succeeding concavely rounded. The base is spirally striated. The type is worn: the protoconch damaged, and the outer lip broken away for a quarter of a whorl. There are spiral striations between the main spirals, and these are strongest on the somewhat hollow infrasutural tabulation; there is no anal fasciole. Length, 6 mm. ; breadth, 3 mm.

The continental shelf of New Zealand.