Solid shell up to about 10cm in length. The outside is dirty white in colour; the inside is white. The shell gapes at both ends. The surface is sculptured with fine concentric rings. The pallial sinus is relatively deep.
Key identification features
- Lower margin of pallial sinus is confluent with the pallial line
Ecology and behaviour
Burrows in muddy sand or gravel where it filters phytoplankton.
Distribution and status
Distributed from the English Channel south to the Mediterranean