Shell fusiform, rather solid, white; whorls 8, of which two are nuclear, globular, white, smooth, the remainder suturally impressed, with regular incrassate nodulous longitudinal ribs, bluntly angled at the periphery, the nodules large, shining. The ribs on the body-whorl number eight or nine. These are crossed by somewhat coarse revolving lines, which, in the specimens before us, are nearly obsolete. Mouth roundly-ovate, sinus rather wide and deep, outer lip slightl expanded, columellar margin fairly straight, canal very short.
Long. 12, lat. 5 mm. sp. maj.; long. 9, lat. 4 mm. sp. min.
Hab.—Cuba.
Dr. Dall informs me that similar shells in the United States National Museum are labelled fucata, Reeve, but these are unauthenticated, and the name is therefore very doubtful. This Antillean species is larger, say 20-21 mm. in length, but much of the same character as to its ribs and general appearance. It is, however, channelled above the periphery, and the coloration is yellowish-white, with brown maculations. D. paria, Reeve, may also be compared.