14 Littorina compressa. Female. 9.1mm high. Anglesey, Wales. March 2014.

14 Littorina compressa. Female. 9.1mm high. Anglesey, Wales. March 2014.

Dorsum of body blackish except diagonal unpigmented line marking course of anterior aorta (1).
Body translucent as pigment not dense on this specimen so large red odontophore (2) in buccal mass, and long radula in whitish and pink spiral sac (3), visible within body. Translucent yellowish edge of mantle near edge of aperture (4); mantle grey further into aperture.
Upper edge of ovipositor (5).