Shell small, very thin, with a thin periostracum of a straw-yellow color, distinct suture, subacute spire, and about six whorls; surface apparently smooth, but under the lens showing fine uniform microscopic spiral striation, but not fasciculated, but more or less undulate; aperture white, outer lip slightly expanded and thickened; a thin wash of callus on the body; pillar short, twisted, not pervious; -canal short, wide, deep, forming a marked fasciole with no keel behind it; when fresh, the periostracum, rising on the incremental lines in microscopic elevated lines,
reticulates the sculpture, but this is lost with wear. Long, of shell, about 34; of last whorl, 25; of aperture, 16.5; max. diam., 15 mm. (Dall.)
TYPE in United States National Museum, No. 110534. Type locality, Station 2853, southeast of Alaska peninsula.
RANGE. Near Shumagin Islands, Alaska, in 159 fathoms.