Lunella torquata

The large, solid, umbilicate shell has an orbiculate, conic shape.

The six whorls show dense lamellose incremental striae and coarse spiral lirae.

The white columella is perforated by the wide and deep umbilicus, and with a spiral groove extending to the base.

Its outside is white, excavated at the center, with two strong spiral ribs, the inner one decidedly the stronger.

[2] This marine species occurs from New South Wales to Western Australia and off New Zealand.

Drawing of the shell and the animal of Lunella torquata