Shell small, solid, grayish, with six whorls exclusive of the (lost) nucleus: suture strongly appressed, obscure with a threadlike edge in front of which is a narrow spirally striated space bordered in front by a larger cord forming the posterior margin of the anal fasciole: the fasciole is strongly constricted, undulated by the ribs and spirally striated; other spiral sculpture of (on the upper whorls one, on the later two) peripheral cords which are swollen where they pass over the ribs and on the anterior of which the suture is laid: on the last whorl there are six such cords with much wider spirally striated interspaces, and about live closer threads on the canal: axial sculpture of (on the last whorl six) strong rounded ribs almost continuous up the spire, most prominent at the periphery and feeble on the base; aperture narrow, with a varicose rib behind it; anal sulcus short, with a strong subsutural callus, inner lip erased, pillar with a thin layer of callus, smooth, short, with a very short deep canal forming an evident siphonal fasciole. Height of shell. 11: of last whorl. 5.5; diameter. 5 mm. Cat. No. 55254 U.S.N.M.
Range.—Panama, in the Stearns collection, collected by Thomas Bridges.
This shell, being somewhat bleached, is probably of a darker color when fresh.