Shell of moderate size of about seven and a half whorls, the nucleus rounded, not swollen but rather large; suture distinct, the whorls mod¬erately rounded; surface covered with a dark orange-brown periostracum, beneath which the shell substance is white; sculpture of incremental lines, not prominent but regular and close-set, crossed by numerous flat spirals with very narrow interspaces, this sculpture covering the whole surface, the spirals being slightly narrower in front of the suture; on the periphery of the last whorl there are about two spirals with their interspaces the width of one millimeter; aperture less than half the length of the shell; canal wide, short, sharply recurved; outer lip simple, flexuous, expanded, receding behind the periphery and advancing near the suture, connected over the body with the pillar by a thin layer of white; operculum ovate, with apical nucleus, dark brown. Height of shell, 43; of last whorl, 31; of aperture, 20; max. diam., 21. (Dall.)
TYPE in United States National Museum. Type locality, Sucia Island, Gulf of Georgia, in 67 fathoms.
RANGE. Bering Sea, 70-100 fathoms; British Columbia, 67-142 fathoms; Monterey Bay, California, 633 fathoms.