Shell large, short-spired, acute, solid, livid whitish, with a thin dehiscent pale brownish periostracum and six shouldered whorls exclusive of the (lost) nucleus; axial sculpture of (on the penultimate whorl, 14) rounded, arcuate ribs, with wider interspaces, most prominent on the shoulder but extending over the periphery almost to the canal, though somewhat irregularly disposed; other axial sculpture of rather conspicuous crowded incremental lines; spiral sculpture none, on and near the periphery of the last whorl are a few more or less obsolete irregularly divergent raised lines; aperture wide, white, throat pinkish, outer lip thin, expanded, body and pillar thickly enameled, pillar straight, canal short, shallow, wide, hardly recurved; operculum dark brown chrysodomoid, the scar of attachment relatively small. Height of shell, 110; of last whorl, 78; diameter, 58 mm. (Dall.)
TYPE in United States National Museum, No. 213315. Type locality, United States Fish Commission Station 3282, off the Khudubine Islands, Bering Sea.
RANGE. Kotzebue Sound to Aleutian Islands, also Japan.