The body whorl is armed around the carinate periphery with long slender closed tubular radiating spines, about eight in number on the body-whorl, and which are reabsorbed as the growth advances leaving only short stumps to festoon the sutures.

The upper surface shows a close revolving series – generally eight to ten on the body whorl – of minute laterally compressed granules.

The aperture is transversely ovate, angulate and channelled at peripheral carina, iridescent within.

The umbilical region is covered with a heavy callus, more or less stained with pinkish, somewhat excavated at center, and obsoletely spirally ridged.

[2] This marine species occurs off the Philippines, Indo-China, Indo-Malaysia, Japan and Australia (Northern Territory, Queensland).