Shell high and narrow, biconical, ribbed and spiralled, of a frosted-white colour, with subscalar, blunt but small-pointed spire, a small body-whorl and mouth, and rather contracted base. Sculpture: Longitudinals: on the last whorl there are 14, on the penultimate 10, and on the first regular whorl 9 ribs; they arise very feebly at the suture, gain height in the sinus-area, and add on a little breadth below; they are high, narrow, and rounded; toward the mouth they are crowded, but in general are parted by rounded furrows of two or three times their width; they extend to the extreme point of the base, but not to the snout. The whole surface is likewise fretted with minute sharp lines of growth. Spirals: on the embryonic whorls there is one, on the other whorls two, fine spiral threads; the upper and stronger lies below the sinus-area about one-third down the whorl, and forms, with help of an angulation at that point, a rather sharp keel, rising into small sharp tubercles at the intersections of the ribs; between this keel and the root of the snout there are on the last whorl six weaker threads, which all rise into tubercles as they cross the ribs. On the snout are three or four weaker threads without tubercles; the interstices of these spirals are from twice to four times their width. The whole surface of the shell, except the embryonic whorls, is scored with very fine, sharp, close-set spirals, which, at crossing the lines of growth, are beset with microscopic blunt prickles which give the frosted aspect to the shell. Colour white ; only the tip is smooth. Spire conical, scalar, in consequence of the drooping projecting shoulder at the top of each whorl. Apex consists of 3 1/2 embryonic whorls, which are conically globose, smooth, keeled, closely, roundedly ribbed, with a deepish suture, and rise to a minute point (crushed). Whorls 8 1/2 in all, a little hunchy and disorderly; they have a long slightly drooping shoulder defined by the keel, below which they are cylindrical, with a slight contraction into the lower suture; the last whorl is small, with a contracting scarcely convex base, prolonged into a small, but distinct, and somewhat cylindrical snout. Suture small, slightly impressed. Mouth small, narrow, slightly pear-shaped, oblique, triangular above, prolonged into the small canal below. Outer lip flat at the shoulder, angulated at the keel, slightly convex below this ; the edge projects thinly beyond the last longitudinal rib, which serves as a varix : it presents a flattened, but regular curve from the point of the shell to the keel, where the edge forms a little shoulder, between which and the body lies the narrow round small sinus, with its flanged border. Inner lip straight, with a very thin narrow glaze which early runs out to the rim, being cut off by the slightly oblique and twisted edge, which continues with a slight patulous margin to the point of the shell. H. 0.34 inch. B. 0.12 inch Penultimate whorl, height 0.07 inch. Mouth, height 0.15 inch, breadth 0.04 inch.

Atlantic. From Bermuda to Azores.