Fragile shell up to 3mm in length. It is white to translucent in colour. The surface is sculptured with fine concentric lines.
Key identification features
- Absence of cardinal teeth ?valve?
- Surface sculptured with concentric lines
Ecology and behaviour
Burrows in muddy sand and gravel but also occurs in the perforations of old oyster shells, burrows of Goldfingia and associated with Acrocnida brachiata.