Appearance
The length of the shell varies between 50 mm and 90 mm. The large, imperforate, rather thin shell is conic. The periphery is rounded. The spire is more or less elevated. The sutures are deeply impressed. The seven whorls are well rounded, with close lamellose incremental striae, and corrugated by obliquely descending subtuberculose folds. The base is flattened bearing concentric densely squamose lirae, deeply concave in the center, and indented in the place of the umbilicus. The aperture is transversely oval, very oblique, pearly and somewhat corrugated within. The thin columella is arcuate. The umbilical region and part of base is covered with a thin callus. The operculum is brownish or white inside.