Length 4.1 mm. The anus is on a large whitish papilla (1) that opens into the mantle cavity at the posterior where the girdle deflects dorsally for expulsion of faeces. The sides of the foot (2) and periphery of the sole (3) are usually pinkish white, and the foot may be paler medially.
Dorset, England. February 2018. Leg. S. Trewhella.