Shell moderately small (4-25 mm), more or less narrowly fusiform, with relatively high spire, sharp apex and gradually tapering base; siphonal canal with shallowly indented termination; aperture narrow, inner lip with a microscopically granular callus, bearing transverse plicae, outer lip preceded by a massive varix, internally with low transverse plicae, anal sinus rounded, rather shallow, occupying most of shoulder slope, stromboid notch usually distinct; sculptured by low, suture-to-suture axial ribs, crossed by weak spiral threads. Protoconch small, conical, with tilted initial whorl, smooth except for axial riblets on last whorl. Radula of lanceolate marginal plates, folded at the midline (i.e. V-shaped in t/s), without barbs.