Common under stones in shallow water.  Biconic and glossy, with keeled axial ribs, interspaces with fine spiral striae, beaded subsutural band, white protoconch, narrow curved aperture, gray or lavender with spiral patterns of white and brown.  Attains 0.2 inch, 4 mm.  East Africa to Okinawa, Hawaii, and the Tuamotus.  Formerly lumped together with Seminella virginea.