Solid shell up to 2.5cm in length. The shell is white or pink in colour usually obscured by brown periostracum.

Very solid shell up to about 13cm in length. The surface is sculptured with numerous irregular fine concentric raised lines. The outside of the shell is white, yellow or brown. The inside is white, soemetimes with a pink tint. The pallial line is not indented with a pallial sinus.

Solid, almost oval, shell up to about 6.5cm in length. Yellowish white or fawn in colour sometimes with pink or brown radiating streaks. Inside of shell white at the margins and often orange towards the centre. Deep, tongue shaped, pallial sinus. Sculpture of pronounced concentric ridges on valve surface.

Solid shell up to 5cm in length. It is dirty white to yellow in colour but this is generally obscured by the brown periostracum. The inside of the shell is white. In perfect speciimens the surface is sculptured with ridges but these are often worn away.

Fragile shell up to 6.5cm in length. The outside is white, sometimes tinged with pink, in colour. The inside is a similar colour but pearly in appearance. The surface has a 'scaley' sculpture.

Fragile shell up to 2.5cm in length. Coloyr can be white, pink, rose, orange or yellow both inside and out. The surface is sculptured with concentric ridges. Pallial sinus deep and partially confluent with pallial line; cruciform muscle scars sometimes distinct.

Solid shell up to 4.5cm in length. Light yellow, orange, pink or fawn - sometimes banded. The inside of the shell is orange, tending to be lighter towards the edges. The shell surface is sculptured with concentric ridges with the left valve smoother than right. Cruciform muscle scars sometimes distinct.

Solid shell up to 9cm in length. The colour is very variable and includes white, red, pink, brown, orange, yellow and purple and shades between these. In addition, the valves are often patterned with various combination of these. The surface of the shell is sculptured with rounded ribs which are corregated.

Shell up to 90mm lomg, 90mm high, 70mm wide, juveniles round, adults roundish, becoming slightly produced posteriorly and with a slight keel, not produced anteriorly.

Up to 60mm long, 60mm high, 45mm across, adults plump and round, perhaps a little produced posteriorly but not keeled. About 20 strong radial ribs, fewer in juveniles.