09 Littorina compressa

09 Littorina compressa

Left: white columellar lip (1) untinted by other colour. Glaze of parietal lip (2) obscured by algal growth. H. 11.7 mm. Anglesey, Wales. March 2015.

Right: dark pigment spread beyond grooves forms a broad band. Cornwall, October 2014. © T. Pearman.