Shell narrowly fusiform, elegant, white, shining, whorls twelve, three being nuclear, smooth, transparent, the remainder slightly ventricose, suturally impressed, obliquely costulate, the riblets crossed spirally throughout with revolving sulci, close-set, but not numerous toward the base. Mouth white or slightly cinereous within, wide, outer lip expanded, incrassate, sinus narrow, deep, and well expressed. At the lip-insertion is a shining, white, callous protuberance. At the base the lip is suddenly narrowed, with" columella fairly straight, base extended, rostrate.
Alt. : 14. Diam. : 4 mm.
Allied to Drillia lucida Nevill, which is identical with persica, Smith, an Eastern species, as we expect this to be, though no locality is actually given. The chief difference is that whereas the species just mentioned is smooth throughout, our new form is closely girt with revolving fine sulcations. It seems, likewise, to approach Clavus aeneus and candidulus, Hedley, from Queensland, and Mr. Fulton compares it also with Mangilia quisqualis, Hinds, from the Western Coast of Central America, but the larger axial ribs and spiral sulcation again separate it from a nearer alliance. With some confidence we place this in the genus Clavus, Montfort, 1810.