Height 7.5 mm. Aperture over 50% of height. Mature, so interior of aperture lips well developed (1). Adapical angle acute (2). Periostracum extends as flexible flap beyond outer lip (3). No umbilicus. April 2012. Portland Bill, Dorset, England.
Height 7.5 mm. Aperture over 50% of height. Mature, so interior of aperture lips well developed (1). Adapical angle acute (2). Periostracum extends as flexible flap beyond outer lip (3). No umbilicus. April 2012. Portland Bill, Dorset, England.