Fragile shell up to 4cm in length. Dirty white or brown in colour on the outside. The inisde is dark green and glossy. The surface is sculptured with fine concentric and radiating lines.
Key identification features
- Two muscle scars on the upper valve are joined.
- The muscle scars are furrowed
Ecology and behaviour
Lives on bottoms of coarse sand and gravel attached to rocks or other shells.
Distribution and status
Distributed from Norway south to the Mediterranean.