Shell orbicular, turbinately depressed ; whorls convex, smooth or transversely striated, the last rounded at the periphery ; umbilicus partly closed by a callus deposit; collimellar lip ending anteriorly in an obtuse dilated callus.
The species are moderate-sized shells, depressed, the whorls convex, with a mottled or streaked colour-pattern. The callus emitted at the columellar-parietal angle of the aperture is tongue-shaped, closing the umbilicus except a rather narrow chink, or even entirely in some species.