Shell solid, stout, of about eight whorls, the apical ones being always eroded in adult shells; the upper whorls with fifteen to sixteen axial rounded, little elevated, nearly straight riblets, which become feebler and finally vanish on the last whorl; suture appressed, slightly constricted; other axial sculpture of obscurely channeled grooves which become wider with age and on the penultimate whorl are about fourteen in number; on the last whorl they are coarsest on the base, but nowhere sharp or clean cut; the whole surface is covered with a dark olive periostracum, under which the shell is white; aperture ovate, the body erased white, the pillar gyrate but not pervious, the outer lip thin, sharp; the canal rather wide and strongly recurved. The nucleus is not preserved on any of the specimens. The operculum is dark horn color and forms about one whorl. Length of type specimen (about five whorls, 36.5; of last whorl, 25; maximum diameter, 15 mm. (Dall.)
TYPE in United States National Museum. Type locality, Bering Sea, in 987 fathoms, off Pribilof Islands.
RANGE. Off Pribilof Islands, in 987-1,401 fathoms.