Thin, fragile, shell up to 1cm in length. It is white, yellow, grey or light brown in colour sometimes displaying irregular patterns. The surface lacks ribs but is sculptured with fine concentric and radiating lines.

Fragile shell up to 3mm in length. The shell, both outside and inside, is whote to translucent in colour. The surface is sculptured with fine concentric lines.

Solid shell, but thin, up to about 6 cm in length. Shell not glossy and grey, light yellow or light brown in colour. Surface of shell is sculptured with irregular concentric lines. Pallial sinus relatively deep and its edge is partially confluent with the pallial line.

Fragile shell up to 1cm in length. The shell is coloured white both outside and inside? The surface is sculptured with fine concentric lines.

Conical shell up to 7mm in length (4mm in height). The shell is white or cream in colour.The surface is sculptured with 19-25 radial ridges. Note that there is a small septum below the slit which partially blocks the hole.

Brittle shell up to 5cm in length. It is brick red or brown in colour mottled with white and occasionally completely white. The surface is primarily sculptured with a few radiating ribs but also has less obvious radiating and concentric lines.

Fragile shell up to 4cm in length. It is white in colour sometimes with brown markings. The interior is glossy white. The surface is sculptured with 'fluted' ribs ? Wavey?

Roughly rectangular shell with rounded corners up to about 4cm in length. White or cream in colour sometimes with red-brown streaks. Periostracum yellow-green. Surface sculptured with fine concentric lines and very fine, serrated, radiating lines in the anterior half. Growth stages clear.

Up to about 13cm in length. White or fawn in colour with light yellow or light green periostracum. Shell sculptured with fine concentric lines.

Brittle shell up to about 6cm in length and white to fawn in colour. Valve surface covered with fine concentric ridged and strong radiating ribs somes very coarse and bearing spines. Margin smooth except where the larger ribs meet it. Three cardinal teeth in left valve; right valve has two. Note - not typical of the Veneracea more like Pholadidae (piddocks) but lacks the very prominent cardinal teeth typical of piddocks.