Solid shell up to about 13cm in length. The shell gapes at each end. It is white, yellow or fawn in colour and the inside is white. ?The surface of the shell is sculptured with fine concentric rings and ridges?. Pallial sinus is deep. ? Mention V shaped projection?
- Lower margin of pallial sinus is confluent with the pallial line
- The anterior cardinal tooth of right valve is longitudinally bifid
Mainly burrows in shell gravel where it filters phytoplankton.
Distributed from the south of Britain to the Iberian Peninsula and into the Mediterranean