Shell oblong-globose, deeply umbilicated, apex obtuse, whorls 4, upper ones rounded, smooth; last whorl slightly concave and striated at the suture, then rounded. Aperture semilunar, columellar margin thickly callously enamelled at the upper part, umbilicus moderate, with a conspicuous central callosity. Shell white, opaque near the suture. Alt. 26, diam. maj. 24, Apert. alt. 19, lat. 10 mill. Hab. Red Sea (Mr. Ruyssenaers)