Length 43 mm. Menai Strait, Wales. February 2014.
Ample yellow mantle covers whole body. Large, translucent, pale, unpigmented, bipinnate and tripinnate gills surround a contrasting brown anal papilla.
Lateral rows of brown blotches; 3 on left, 5 on right of animal.
White-capped caryophyllidia around bases of rhinophores and in several white spots scattered across the mantle.