Conical shell up to 10mm in length (6mm in height) with slit in the anterior margin. White both inside and out. The surface is sculptured with a coarse reticulate pattern with 25-35 radiating ridges.
Key identification features
- Coarse sculpturing of shell surface
- Apex is close to the centre of the shell
Similar species
- Emarginula crassa has much finer sculpturing of the surface
- Emarginula rosea has apex further back - close to the posterior edge of the shell
Ecology and behaviour
Lives on the underside of rocks which harbour growths of sponge on which it feeds. An exhalent siphon is projected through the slit.
Distribution and status
Frequent
Found on all Atlantic coasts.