Shell white, with a thin, pale olive periostracum, the apex invariably eroded, and the subsequent whorls, eight or more, polished and faintly showing incremental lines; suture inconspicuous, the anterior margin sometimes raised like a small cord; spiral sculpture of a strong, sometimes nodulous or undulated peripheral keel, rather nearer the succeeding suture than to the preceding one, the latter space occupied by the slightly concave anal fasciole; axial sculpture only of arcuate incremental lines; base rounded; aperture narrow, outer lip thin, sharp, produced, internally smooth; anal sulcus wide and shallow, with no parietal nodule; inner lip erased; pillar smooth, twisted, not pervious, attenuated obliquely toward the rather long, slightly recurved canal. Height of decollate specimen, of about 5 whorls, 16; last whorl, 11.7; diameter, 6.25 mm. (Dall.)

Type locality, Station 3670, Monterey Bay, California, in 578 fathoms.
RANGE. Monterey to San Diego, California, in deep water.