Shell elongated, apex attenuated, blunt at the end; whorls (nuclear) three, (normal) four—total seven or more; texture porcellaneous; epidermis bright yellow-brown, shell beneath it, and at the aperture, white; columella nearly straight, smooth; outer lip hardly thickened, waved by the ridges. Sculpture composed by very prominent, revolving, flat-topped ridges, separated by channeled interspaces, which the ridges slightly overhang. There are three of these ridges on the smaller whorls, and fourteen or more on the last whorl, of which the posterior four predominate in size and strength. The tops of the ridges are waved here and there, showing a tendency to traverse costae, which, however, are not present in any of the specimens. Top of the whorls squarely shouldered by the first ridge. On the ridges are usually one or two rather deeply incised lines, and a large number of delicate striae cover the whole surface parallel with the ridges. The cylindrical form of the embryonal whorls (which are free from strong ridges) is a remarkable character, but common to C. kennicottii Dall. Length, 3.5; greatest width, 1.65; length of aperture, 1.65 in. Canal very short, hardly differentiated from the aperture. Siphonal fasciole none, or barely perceptible. (Dall.)
TYPE in United States National Museum. Type locality, Unalaska, in 100 fathoms.
RANGE. Plover Bay, the Aleutian Islands, and eastward to Shumagin Islands, Alaska.
This was described as a Chrysodomus.