01 Assiminea grayana

01 Assiminea grayana

Empty translucent shell in water, light colour as no dark body within. No umbilicus, but depression adjacent to columellar lip. Spire and aperture each about 50% of shell height, adapical angle acute. Height 6.2 mm, unusually large specimen. March 2013. Salting at mouth of Dee Estuary, England.