Shell walls thin and translucent showing body within.
Smooth surface has fine growth lines (1) and barely-visible, microscopic, spiral striae (2). Shell height 7.4 mm. Orkney, Scotland. May 2017. Leg. S. Taylor.
Shell walls thin and translucent showing body within.
Smooth surface has fine growth lines (1) and barely-visible, microscopic, spiral striae (2). Shell height 7.4 mm. Orkney, Scotland. May 2017. Leg. S. Taylor.