Shell delicate, white under a greenish periostracum, with about seven whorls; suture not appressed; axial sculpture of incremental lines which cut the spiral keels and minutely serrate their edges occasionally; spiral sculpture, fundamentally of two prominently elevated keels; one at the shoulder recurved, the other vertical to its base; with ten or twelve not prominent spiral cords on the base. In one specimen the space between the keels has no spiral sculpture, in another there are one or two minor keels and numerous faint spirals; this specimen also has a minor keel marginating the base. Aperture rather small, the outer lip sharp, thin, modified by the keels; inner lip erased, white; pillar gyrate, minutely pervious; canal short, wide, hardly recurved. Operculum with subspiral nucleus and much transparent enamel on the margin of the proximal surface. Length, 31; length of last whorl, 20; maximum diameter, 14 mm. (Dall.)
TYPE in United States National Museum. Type locality, Bering Sea, off Koniugi Islands, in 1,766 fathoms.
RANGE. Bering Sea, off Koniugi Island, Aleutians, in 1,766 fathoms.