Foot concealed by the body.
1: anterior veil (mantle edge) has 6 orange processes.
2: 15 lamellae on rhinophore; P. capitata has c. 8, maximum 11.
3: triangular projection at the anterior of the mantle rim.
4: large single lobe at each side of the gills.
5: translucent white gills with orange tips and axes; orange anal papilla visible within gill ring of image on the right.
Length 14 mm. Menai Strait, Wales. February 2011.