The translucent white body reveals, in the anterior half, internal black eyes on the circum-oesophageal nerve ring to the rear of the rhinophores and, in the posterior half white spheroid ovotestes.
The integument of the cerata is translucent white with a fine powdering of opaque white, which is densest subapically.
Length 6 mm. LWST, Menai Strait, Wales. March 2010