Shell small, conical; spire elevated; apex subacute; whorls eight, slightly convex, crossed by seven to ten prominent, rounded ridges which are less prominent near the suture; spiral sculpture consists of nine to eleven sharp, raised lines; three upper whorls have a cancellate appearance ; suture appressed, wavy; aperture ovate; outer lip thickened by denticulated ridge on inner side; inner lip smooth, incrusted, the incrustation completely covering the spiral sculpture internally; columella twisted, spirally sculptured, with deep groove next to body-whorl; canal short, broad, recurved. Long., 30; lat., 14.5; body-whorl, 18; aperture, 11 mm. (Arnold.)