Freshly extracted shell with yellowish periostracum and distinct slightly jagged spiral striae under magnification (left). Shell height 15 mm. Tidal River Deben, Suffolk, England, August 2020, Leg. A. Price.
Freshly extracted shell with yellowish periostracum and distinct slightly jagged spiral striae under magnification (left). Shell height 15 mm. Tidal River Deben, Suffolk, England, August 2020, Leg. A. Price.