Shell small, biconic, acute, solid, black with the projecting sculpture yellow, with a rounded nucleus of one and a half smooth whorls and eight subsequent whorls; suture closely appressed. obscure, behind a series of very fine close threads (about four on the last whorl) followed by a very strong yellow cord which on most of the spire forms the periphery, in front of this cord is the moderately constricted anal fasciole similarly threaded; in front of this is ( on the spire one, on the last whorl two) a series of yellow nodules (about a dozen on the last whorl) rather distant from one another and connected by a small yellow cord, like beads on a string: the two series on the last whorl are close together, only separated by a much smaller thread, giving a dumbbell shape to the nodules; in front of this pair on the last whorl are four distant yellow thread- with single nodules placed in harmony with the larger ones above mentioned and half a dozen finer threads on the canal: the interspaces between the threads are finely threaded like the fasciole. and are often minutely decussated by the incremental lines which form the only axial Sculpture; aperture narrow, anal sulcus shallow, rounded, with a subtural callus; inner lip smooth, erased, pillar callous, smooth, canal short, wide, hardly differentiated from the aperture. Height of shell: 13: of last whorl: 7.5; diameter: 5 mm. Cat. Xo. 55472. U.S.N.M
Range.—Panama, Stearns collection.
This species seems by coloration and sculpture different from the numerous other forms of this group which swarm at Panama, but the range of variation require- thorough investigation before one can be certain of the specific status of any of them.