Shell of medium size, white, with a very pale olive-gray, thin, dehiscent periostracum, with about eight gradually increasing whorls (the nucleus defective) separated by a well-marked suture; spiral sculpture of three rather prominent subequal cords, one at the shoulder, one at the periphery, and one midway between the others, the interspaces equal, wider and carrying two or three intercalary alternating threads; on the last whorl in the type specimen, in front of the periphery, are about 20, subequal and equally spaced, flattish threads with narrower very shallow interspaces; the canal has no spiral sculpture; axial sculpture of fine vertical threads with wider interspaces; aperture more or less sinuous behind; canal short, wide, recurved with a feeble fasciole; operculum small, smooth, concave, with nucleus somewhat to the left of the center. Height of shell, 60; of last whorl, 32; diameter, 44 mm. (Dall.)
TYPE in United States National Museum, No. 226270. Type locality, United States Bureau of Fisheries Station 3709, off Honshu Island, Japan Sea, in 260 fathoms.
RANGE. Pribilof Islands, in 688 fathoms; also Japan.