Solid shell up to 3cm in length. It is white in colour obscured by dark brown periostracum. The surface of the shell is sculptured with concentric ridges and finer lines.

Solid shell up to 4cm in length. The shell is white but obscured by dark brown to black periostracum. The surface of the shell is sculptutred with concentric lines.

Solid shell up to 2cm in length. Broadly oval in outline. Dirty white, light yellow or fawn in colour. Sculpture of up to 50 radiating ribs raised into small tubercles by concentric ridges. Periostracum fibrous and slight.

Fragile shell up to 1cm in length. Shell white but often obscured by a rust coloured deposit. Inside may have a light purple tinge. The surface of the shell is sculptured with concentric lines and a few faint radiating lines.

Tectura virginea. White Tortoiseshell Limpet. Taxon version key: NHMSYS0021056385. Common. Occurs throughout Europe on Atlantic and Med coasts. Conical shell up to 10mm in length. The surface of the shell is smooth. It is white or cream in colour with pink lines which are often broken giving a chequered pattern. Occasionally a pure white specimen may be found.

Solid shell up to about 6cm in length. Colour cream or yellow often with rays or streaks of brown or red brown. Inside of shell white, often tinged with pink. Sculpture of flattened ribs but radial lines are absent. Pallial sinus dies not extend to the midpoint of the shell. Lunule not bounded by a clearly marked groove. Inside glossy sometimes with purple, yellow or orange tinge towards the beaks. Each valve has three cardinal teeth; the centre tooth on the left valve and centre and posterior on the right valve bifid.

Solid shell up to about 5cm in length. White, yellow or brown in colour often heavily decorated with darker brown rays, streaks, blotches or waves. Inside of shell white or pale yellow sometimes with purple colouration. Very distinct radial sculpturing on shell and less prominent concentric sculpturing. Siphons fused together for almost their entire length.

Solid shell up to about 7cm in length. White yellow or light brown sometimes with rays or streaks of darker brown. Sculpture of radiating ribs and concentric rings give the a valves a very marked descussate appearance. Radial sculpture is as distinct or more distinct than concentric. Each valve has three cardinal teeth; the centre tooth on the left valve and centre and posterior on the right valve bifid.

Solid shell up to about 4cm in length. Pale yellow, dirty white or brown in colour sometimes with lines zig-zags or blotches of purple or brown. Sculpture of flattened concentric rings crossed by very fine radiating lines (difficult to see with the naked eye). Pallial sinus reaching the midpoint of the shell. Inside of shell white or cream tinged with yellow. Lunule bounded by a fine groove. Each valve has three cardinal teeth; the centre tooth on the left valve and centre and posterior on the right valve are bifid.

Soid shell up to 2cm in length. It is yellow white in colour obscured by brown periostracum. The inside of the shell is white. The surface of the shell is sculptured with radiating ribs and ridges which gives rise to a reticulate appearance in the middle of the valves.