Shell small, slender, brownish; nuclear whorls 2,5 , smooth, swollen; postnuclear whorls 7, sutures appressed; first 3 whorls with 8 sharp nodes near the lower edge, on the fourth whorl these begin to become axially elongated with first 1 and then 2 spirally elongated ridges crossing the tops but absent in the interspaces; on the last whorl there are 10 axial ribs extending from the anal fasciole to the canal, crossed by 5 spiral cords, strong on the tops of the ribs, faint in the interspaces, these are followed by 12 closely spaced spiral threads on the lower part of the base and on the canal; anal fasciole rather broad, marked by numerous, curved lines of growth; aperture narrow, outer lip thin at the edge, greatly thickened a short distance back by a strong varix, separated from the canal by a shallow internal depression, interior not dentate; anal sulcus small, deep, with a raised edge and small subsutural callosity; inner lip smooth, the edge not raised; canal rather short, hardly recurved. The type measures: length, 12.5 mm.; maximum diameter, 5.0 mm.

This species is quite similar to Glyphostoma sirena Dall from the Galapagos Islands, but differs principally in the less distinct axial ribs, fewer spiral cords and in the color.

West off Concepcion Point, Santa Inez Bay, Gulf of California, in 6O fathoms (110 meters), mud.