Shell small, purple brown, banded with while, or varicolored; nucleus of one and a half loosely coiled, smooth nuclear, and four subsequent whorls; axial sculpture of six, somewhat sigmoid rounded ribs continuous up the spire, with excavated, much wider interspaces, with fine axial striation, which slightly wrinkles the spirals; spiral sculpture of numerous sharp, often paired grooves separated by wider flattish interspaces which are faintly marked by the axial striation; aperture narrow, anal sulcus conspicuous, outer lip thickened, smooth inside, pillar simple, canal hardly differentiated. Height of shell 6 mm.; of last whorl 3.5 mm.; diameter, 2 mm.
TYPE in United States National Museum, No. 73994

San Diego. California, to Cape San Lucas