Shell acute, polished, white with touches of brown on the anal fasciole and on the last whorl behind the varix; nucleus blunt, the first whorl smooth, the second peripherally carinate; subsequent whorls eight, moderately rounded; suture distinct, appressed, somewhat undulate, the anal fasciole narrow, slightly constricted; spiral sculpture of (on the penultimate whorl 3 or 4) incised lines in front of the periphery, the wider interspaces raised and more or less rounded, on the last whorl there are 16 or more, extending to the canal; the incited lines have a more opaque appearance contrasting with the translucent white of the whorls; there is no fine spiral striation; axial sculpture of (on the penultimate whorl about a dozen) strong, wide ribs less prominent on the fasciole and fading out on the base and the last half of the last whorl; the interspaces equal or sometimes wider; the ribs are cut by the incised lines but are not nodulose; they are most prominent on the anterior half of the whorls of the spire and on the periphery of the last whorl; aperture narrow, anal sulcus deep and rounded, with a prominent subsutural callus: outer lip sharp-edged, with a moderate varix behind it, arcuately produced; inner lip with a rather thick layer of enamel; canal distinct, rather wide, somewhat recurved. Height of shell 17 mm. ,Height of last whorl 8.7 mm.; diameter 6.3 mm.

Gulf of California.