Bering Sea near the Pribilov Islands.

Shell large, regular, acute, whitish, with a warm yellow-brown persistent periostracum with eight whorls, exclusive of the very minute (lost) nucleus, separated by a very sharply defined suture, and elegantly rounded; spiral sculpture of (on the penultimate whorl, about 15) flattened, revolving, close-set cords either in pairs or medially grooved for the most part, practically uniform over the whole shell; axial sculpture only of fine silky incremental lines; aperture rather wide, the outer lip expanded, thin, more or less crenulated internally by the effect of the external sculpture; body and pillar with a thick, continuous coat of enamel; canal distinct, short, slightly recurved; operculum solid, blackish, with apical nucleus. Height of shell, 85; of last whorl, 55; of aperture, 43; diameter, 38 mm. (Dall.)
TYPE in United States National Museum, No. 222983. Type locality, United States Fish Commission Station 3484, in Bering Sea.
RANGE. Near Pribilof Islands, in 60 fathoms.