Shell fusiform, white, tinted with violet and yellow, particularly between the ribs; whorls 6 1/2 including a rounded, smooth two-whorled protoconch; the three spire whorls spread flatly out from the suture to form a broad shelf, and then curve sharply down and inwards to the base, being far the widest at the angle; strong rounded ribs, about 12 on the first whorl and 16 on the penultimate, extend from the lower suture to the carena, where they form a nodulous ridge, higher than the shelf, and continue obscurely to the suture; five or six insized spirals corrugate the ribs; the body whorl is large, without ribs, but has a number of sharp, distant spiral lirae; the periphery forms a sharp angle, the edge of which is higher than the flat shelf, which is spirally lirate, and crossed by fine curved lines of growth, corresponding with a shallow sinus: mouth oblong, square above, produced anteriorly into a short open canal.
Length 13 mm.; breadth 8 mm.

Australia. 10 miles East of Schouten Island, Tasmania.