Shell of moderate size, acute, white under a dehiscent straw-colored periostracum, with a strongly constricted suture and about six slightly shouldered, somewhat rotund whorls, exclusive of the (lost) nucleus; the whorls of the spire are numerously ribbed (about 20 on the penultimate whorl), with slightly oblique riblets most emphatic on the shoulder, obsolete at the periphery and on the last whorl; the incremental lines are prominent, close, and thread-like; spiral sculpture of very minute, closely undulated, close-set striae, which gave a somewhat granular or punctate aspect to the intervals between the axial threads; on the periphery of the last whorl are a few obsolete, stronger spirals; aperture wide with a conspicuous gutter somewhat in front of the shoulder in the outer lip; a glaze of enamel on the body and pillar, a short shallow recurved canal, and a well-marked siphonal fasciole; the operculum nearly circular, laminose externally, with central nucleus. Height of shell, 47; of last whorl, 34; diameter, 30 mm. (Dall.)
TYPE in United States National Museum, No. 222485. Type locality. United States Fish Commission Station 3518, off Nunivak Island, Bering Sea.
RANGE. Bering Sea, Nunivak Island, to north of Unimak Island, in 36 fathoms.

Arctic Russia. Bering Sea. Off Nunivac Island.