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.

Solid shell up to 15cm in length. The valve is flat and red brown in colour. The right is convex and white or cream in colour. The inside of both valves is white. The surface is sculptured with prominent radiating ribs and finer concentric lines.

Conical shell up to 70mm in length (25mm in height). The outside is grey to yellow in colour. The inside is glossy greenish sometimes with purple rays and white towards the centre. The surface of the shell is sculptured with radial ridges running from the apex to the margin and the posterior outline of the shell smoothly rounded.

Conical shell up to 50mm in length (20mm in height). Outside of the shell is white or grey. The inside is also white (tinged blue) with a yellow/orange head scar.

Conical shell up to 30mm in length (12mm in height). The shell is white or grey externally, sometimes with darker bands running from the apex to the margin.