07 Marsenia perspicua

07 Marsenia perspicua

Moderately domed specimens. Can be a very high dome or conical.
Ground colours include grey-brown, as on these, and dorsal surface varies from strongly tuberculated to almost smooth. Left:19 mm long, Llŷn Peninsula, Wales. March 2016. Right: 20 mm long, Menai Strait, Wales. February 2011.