Shell short, stout, with a depressed spire and shouldered last whorl; white, with live whorls, sculptured with punctate spiral lines; nucleus small, eroded ; other whorls with two, three, or (on the last) twenty to twenty-five spiral lines, which are distinctly punctate, with about ten punctations in the length of a millimeter ; the spirals arc crowded just in advance of the suture and near the pillar, and especially distant on the shoulder of the last whorl; suture distinct, with the anterior margin finely crenulate in the last whorl; other sculpture of fine lines of growth and microscopic revolving striae as in the last species ; outer lip hardly oblique, joining the body at a wider angle than usual, owing to the shouldering of the last whorl, thin, simple, passing imperceptibly into the short, twisted pillar, which bears a single distinct fold ; body whorl with only a glaze, pillar hardly or not at all thickened ; aperture approximately lunate. Lon. of shell, 6.0; of last whorl, 5.25; of aperture, 4.25. Max. lat. of shell, 4.0 ; of aperture, 1.02 mm.
This species has a good deal the outline of the common Melampus corneus of the east coast of America.