Shell in sculpture much resembling D. smirna, especially on the older whorls which differ from those of D. smirna in the following particulars : the nucleus is a rich, dark, shining brown ; the nodules have more extended bases, and want the white tips ; the color of the whorls is more clearly translucent, wanting the pinkish tinge and the white sutural line ; the whorls increase more rapidly in size, and are strongly appressed against their predecessors, thus making the line of the suture irregular; whorls nine instead of twelve ; the body whorl is quite different in shape and sculpture; the nodules, of which there are on the last whorl only eleven instead of fourteen, instead of becoming obsolete on the latter half of the whorl, are produced in the form of stout, strong ribs over the periphery, when these suddenly cease and the anterior part of the whorl is as it were constricted, instead of gradually tapering to the canal, so that the latter is much more clearly differentiated from the rest of the aperture than is usual in this genus; there is no spiral sculpture, even on the canal where traces are usually perceptible ; notch as usual; a thin callus on the pillar rising into a sort of lamina at its outer edge forms a rather deep groove along the columella, which last is attenuated anteriorly. Lon. of shell, 10.0 mm ; of last whorl, 5.0 mm ; of aperture, 3.75 mm ; of canal, 1.5 mm. Max. lat. of shell, 3.0 mm.; of aperture, 1.5 mm., Defl: about 22°.

Gulf of Mexico. Caribic. Cuba. Grenada.