Fragile shell up to about 1 cm in length. The colour is usually reddish / yellowish white but can include white pink, orange and brown sometimes aranged in streaks or blotches. Sculpture of concentric ridges.

Fragile shell up to about 2.5cm in length. It is generally white in colour with pale pink radiating streaks. Sculpture of concentric lines. Pallial sinus very deep, nearly reaching the anterior muscle scar. Cruciform muscle scars generally not visible.

Brittle shell up to 6cm in length. Red in colour but this is mainly obscured by the yellow or brown periostracum. Inside of the shell is pale blue. The surface is sculptured with fine concentric lines and ridges.

Brittle shell up to 4cm in length. It is light yellow in colour with red or purple streaks of zig-zags. Juveniles may be almost completely red. The inside is pearl white. Sculpture?

Fragile shell up to 2cm in length. The beaks are a short distance from the anterior end of the shell. It is yellow tinged with purple on the outside and pale purple on the inside. The surface is sculptured with fine concentric lines.

Solid shell up to about 10cm in length. Dirty white, light brown or light gray in colour. Scupture of concentric lines sometimes raised to ridges (less obvious in adults).

Brittle, glossy shell up to about 5cm in length. It is cream in colour with a purple tint and brown radiating rays. The inside is white or purple. The pallial sinus is relatively deep.

Glossy shell up to about 11cm in length. Creamy white in colour with pale brown radiating rays. The inside is white tinted with pale brown. The surface is sculptured with fine concentric rings and is covered with a satin brown periostracum.

Solid shell up to about 2.5 cm in length. Colour variable including white, yellow and pink, usually with darker concentric bands. Surface smooth and glossy with very fine concentric lines.

Solid shell up to about 13cm in length. The shell gapes at each end. It is white, yellow or fawn in colour and the inside is white. ?The surface of the shell is sculptured with fine concentric rings and ridges?. Pallial sinus is deep. ? Mention V shaped projection?