Shell small, thin, whitish, with a thin olivaceous more or less fibrous periostracum and about six rapidly increasing whorls; spiral sculpture of a narrow, flat-topped, strong keel at the shoulder, frequently another at or a little beyond the periphery, and sometimes two smaller threads, between the suture and the shoulder; secondary sculpture of rather obscure flattish spiral threads with equal or narrower interspaces (but no sharp striation) covering the whole surface; suture distinct, not channeled or appressed; aperture semilunar, outer lip thin, slightly reflected; throat, body, and pillar glossy white; pillar short, straight; canal very short and wide, recurved, with an obscure fasciole; operculum well-developed, pale, with the nucleus near the middle of the outer edge. Long, of shell, 38; of last whorl, 26; of aperture, 17; max. diam., 21 mm. (Dall.)
TYPE in United States National Museum, No. 110517. Type locality, Station 3074, off Sea Lion Rock, coast of Washington.
RANGE. Off Sitka, Alaska, in 1569 fathoms, to Sea Lion Rock, Wash¬ington, 877 fathoms.