Shell of moderate size, up to 40 mm. (1,5 inches) in length, broadly ovate, with very weakly- scalloped edges, and rather low in height, with the apex subcentral. Sculpture delicate and rather even, consisting of very numerous radial riblets, due to little difference in strength between primaries and secondaries; about 140 riblets in all. As the shell reaches mature size, it tends to gain little height but spreads posteriorly. Concentric growth lines are weak and apparent only at the margin in adults. Colour greenish or bluish grey externally, often broadly or narrowly radially banded in dark brown, with pale chestnut lines in the interstices; young shells often uniformly dark greenish grey; silvery-blue to creamy-white within, sparsely and faintly rayed with bluish grey towards the margin; spatula fawn to dark yellowish brown, often clouded with a white callus in mature shells. Radula: Similar to that of tramoserica but all the teeth are shorter and stouter than in that species (Macpherson, 1955, p. 239). Length: 33-44 mm; Width: 28-39 mm; Height: 14-15 mm.

This species is easily distinguished from tramoserica by its very fine and dense radial sculpture, and in the adult stage by a disproportionate broadening of the posterior end. Also the radula differs from that of tramoserica in that all the teeth are shorter and rather stouter.

Australia. North Queensland down to Barbara, South Queensland.