Shell small, white, under an olivaceous periostracum, with six rounded whorls and a very minute (decorticated) nucleus; suture distinct, not appressed; spiral sculpture of (on the penultimate whorl, about 14) shallow grooves, becoming fainter on the last whorl, with much wider flat interspaces; axial sculpture of faint incremental lines; aperture wide, semilunate, the outer lip sharp, thin, arcuate; body with a thin coat of whitish enamel; pillar short, twisted, attenuated in front; canal short, wide, recurved. Height of shell, 23.5; of last whorl, 18; of aperture, 13; diameter, 11.5 mm. (Dall.)
TYPE in United States National Museum, No. 213254. Type locality. United States Fish Commission Station 3252, in Bering Sea.
RANGE. Pribilof Islands to Unimak Island, Alaska, in 27-62 fathoms.