Body and cerata spread widely; can vary to relatively narrow, see same individual in fig. 03. Cerata are flattened, broader at the base and curved inwards.
Oral tentacles (1) are slightly longer than the rhinophores (2) and are placed apart on the anterior edge of the head at a distance equal to about three times the thickness of a tentacle base.
Length 19 mm. Outer Hebrides, Scotland. April 2018. Leg. S. Taylor.