« Shell elongated, spindle-shaped, with pointed spire, composed of seven narrow, convex whorls sub-flattened at their upper portion, divided in the middle by an acute angle, from which project regularly nine or ten long, slightly compressed and pointed spines extending to the base in lamellate varices; these varices do not always correspond from one whorl to another; the last whorl is larger than the spire; the varices with which it is decorated disappear towards the root of the canal, which is straight, elongated, and very narrow, without notches at the base. » – Ibid. p.19.

« The aperture is subtriangular; the columella is cylindrical, with a narrow, thin left margin, applied and slightly raised along the canal; the right margin is slender, sharp, smooth inside; it offers at its upper part, towards the place corresponding to the carina, a narrow sinuosity. The surface of the shell is smooth and of a uniform ash gray. » – Ibid. p.20.