Shell small, thin, with about six whorls, rapidly increasing, whitish with a very thin adherent brown periostracum; suture narrow, deep almost channeled; spiral sculpture of three, progressively diminishing, strong, wide, ill-defined ridges, the first forming a shoulder near the periphery, the interspace between it and the next anterior roundly excavated, the second with the suture under it, the third and smallest in the middle of the base; between the suture and the shoulder the slope of the whorl is flattish; the whole surface sharply microscopically spirally striated, with the striae and intervals more or less fasciculated; aperture subtriangularf the outer lip modified by the sculpture, slightly expanded; throat and body glossy, pillar twisted; canal short, wide, recurved, forming a well-marked fasciole. Long, of shell, 38; of last whorl, 27; of aperture, 20; max. diam., 20 mm. (Dall.)
TYPE in United States National Museum, No. 110518. Type locality, Station 3331, in Bering Sea, north of Unalaska.
RANGE. Bering Sea, north of Unalaska, in 300 fathoms.