Shell of moderate size, solid, white, with an olivaceous periostracum, with about seven whorls, excluding the (defective) nucleus, with the sutural channel almost obliterated; apical whorls with two, later whorls with three, strong but not sharp carinae, revolving nearly equidistant between the sutures, the posterior carina slightly smaller than the others; on the base are about half a dozen similar carinae beside the small spiral threads on the canal; other spiral sculpture of minute striae and threads pretty uniform; axial sculpture if faint irregular incremental lines on which the periostracum is sometimes raised; aperture white, internally reflecting the stronger sculpture; outer lip thin, not reflected, body erased, pillar short, strong, sharply twisted, with a short wide canal. Height of shell, 46; of last whorl, 33; diameter, 30 mm. (Dall.)
TYPE in United States National Museum, No. 122667. Type locality, United States Fish Commission Station 2919 in 984 fathoms, near Cortez Bank.
RANGE. Straits of Juan de Fuca to San Diego, California, in 152-984 fathoms.