Medial notch and mouth (1). Convex anterior of foot extended laterally into propodial tentacles, unpigmented ventrally, pigmented dorsally (2). Narrow, translucent white sole with black marks shows some markings of dorsum. Distinct wide median groove (3) on sole. Lateral flaps of head (4) concealing propodial tentacles. Length 11.5 mm. Menai Strait, Wales, September 2015.