Diagnosis: Color of entire shell pale-beige iridescent; surface opaque, spire about as high as body whorl; about six whorls. Protoconch without hole in adult. Spire profile slightly convex straight. Body whorl with evident spiral lines, spire diameter about 80% of total shell diameter. Carina in lower region of body whorl. Umbilicus completely covered by callus.
Distinctive description:
Shell Large, spire height about same as body whorl, about 3/4 its volume. Spire profile almost straight; very weakly convex, suture shallow. Sculpture similar to that of G compta, with about 25 spiral lines in penultimate whorl. Spire with first 3.5 whorls smooth, gradually axial lines appearing closer to upper suture; then spiral, axial lines becoming equally developed, except near aperture with spiral lines predominating. Body whorl with weak spiral carina between middle and lower thirds. Callus covering entirely umbilical opening .