Anterior and corners of foot deeply bilaminate with the anterior pedal mucus gland within.

Exterior of shell matt, but broad parietal lip and other lips of aperture glossy as frequently covered, protected and renewed by extended yellow mantle. Lips on this specimen stained greenish by algae. Brown periostracum persists in grooves between costae.

Shell height 12.1 mm, West Anglesey, Wales, March 2014.