10 Nucella lapillus. Height 30.6 mm. Mouth of Mersey Estuary, England. July 2014

10 Nucella lapillus. Height 30.6 mm. Mouth of Mersey Estuary, England. July 2014

1: short, open siphonal canal. 2: wide, smooth, faintly lustrous, columellar lip overhangs siphonal canal slightly. 3: wide parietal lip reflected as white glaze onto body-whorl. 4: parietal lip continuous with outer lip through the adapical angle. 5: siphonal fasciole (raised rib).