Shell: large to very large, light, globose , ranging from 96-230 mm.
; suture deeply impressed. Sculpture: 16 broad, rounded spiral ribs, smaller ribs between the larger primary ribs at the posterior end of the body whorl may also be present.
Periostracum thin, straw coloured.
Exterior colour cream to pale brown, may display alternating bands .
Specimens
Iluka, Australia Size: 230mm Collected: Unknown Trawled.
Minnie Waters, Sth Headland, Australia Size: 96.41mm Collected: 1989 found dead in shallow water on rocky reef
