Solid shell up to 8cm in length. The outside of the shell is white tinged with grey. The insde is also white but glossy and can be brown in the centre. The shell gapes to the posterior end.
Key identification features
- Pallial sinus is a series of separate muscle scars
- Posterior muscle scar is longer and thinner than anterior
- ?concentric ridges?
Ecology and behaviour
Burrows in mud, muddy sand and gravel.