CommonDistributed from Norway to the Iberian Peninsula and into the Mediterranean.
Lives attached by byssus threads within crevices such as barnacle tests, algal holdfasts and particularly amongst Lichinia tufts where it may be abundant.
- Red tint to shell
- Surface of the shell sculptured with concentric and a few faint radiating lines
- Presence of lateral teeth on a broad hinge plate
Fragile shell up to 3mm in length. It is coloured dirty white with a red tint both inside and outside. The surface of the shell is sculptured with concentric and raditaing lines.