Streak of white pigment between and in front of the rhinophores.
Medial line of bright azure on the tail.
Cerata, some 40% of the body length, held loosely in poorly defined clumps obscured by overlapping. Subapical, opaque white band on cerata is narrow at posterior and shield-shape at anterior. No white pigment splashes down cerata, but a few small, white spots.
Length 15 mm. Outer Hebrides, Scotland. April 2018. Leg. D. McKay & S. Taylor.