Solid shell up to 1.5cm in length. It is dirt white in colour with yellow-brown perisostracum. The inside of the shell is white. The surface is sculptured with fine concentric ridges and very fine radiating lines.

Solid shell up to 0.5cm in length. It is dirty white in colour with pale yellow periostracum. The inside of the shell is white. The surface is sculptured with fine concentric lines and radiating ridges causing the surface to appear reticulated.

Brittle shell up to about 2cm in length. White or pale yellow in colour sometimes with pink or red-brown radiating rays. Inside of shell is polished and tinged with orange. Exterior of shell is sculptured with prominent concentric ridges.

Fragile shell up to 2cm in length. It is dirty white in colour but this is obscured by yellow brown periostracum. The inside is pearl white. The surface is sculptured with fine concentric and a few radiating lines.

Shell up to 40mm long, 40mm high, 30mm wide, somewhat thin-shelled, roundish oval. In older adults the shell is slightly produced posteriorly but there is no keel. Strongly radially ribbed, 16-18 ribs, wide-spaced, with fine straight concentric riblets or striations between and across the ribs. An intermittent fine ridge along the ribs. Spines stumpy, tuberculate, enrolled. Ribs shown as fluting on the inside of the shell, generaly extending througout. Growth lines
usually distinct. Teeth very similar to those of the preceding species. Juveniles similar to the adult.

Shell up to about 2cm in length. Brittle. White in colour. Sculpture of fine concentric rings and radiating lines (but these may be worn away). Deep pallial sinus which is partially confluent with the pallial line.

Solid shell up to 6.5 cm long. Plump shell that can be as wide as it is long. Pallial sinus small and triangular. Sculpture strong concentric ridges which are warty especially towards the front margin and the sides. Yellow-brown occasionally with three or four red-brown or purple rays; sometimes broken or zigzag. Inside white but may be stained purple or brown.

Solid shell up to about 5cm in length. Cream, grey, light brown or yellowish in colour sometimes with rays, streaks or blotches of brown or purple. Sculpture of numerous concentric rings with fine radiating lines. Concentric ribs generally stronger on the posterior area of the shell. Each valve has three cardinal teeth; the centre tooth on the left valve and centre and posterior on the right valve bifid.

Fragile brown shell but quite plump. Sculpture of fine concentric rings. Muscle scars and pallial line weak.

Solid shell up to 1.5cm in length. The shell is white but obscured by brown periostracum. The surface of the shell is sculptured with concentric ridges.