Outline of body is discoid when at rest. The ground colour is pinkish white with large areas of brown pigment covering most of the pink except for the majority of tubercles (1) and whitish pink strap-like gaps (2) between the blocks of brown. The orange-brown digestive gland shows through the slightly translucent mantle as a darker dorsal zone from the gills (3) to the rhinophores (4). Length 7.5 mm, Orkney. March 1976.