Shell small, slender, with about eight somewhat rounded whorls, which are sculptured by strong, sharp revolving ridges; there are four or five of these on the upper whorls and fourteen to sixteen on body whorl; between the revolving ridges the surface is sculptured with sharp, longitudinal threads; aperture elongated, scarcely wider below; columella three-plaited. Color yellowish white. Length, 15 mm.; diameter, 5 mm.