Specimen from 1-2 m depth at Rovinj, Croatia. Length 26 mm. © J. Prkić.
Features below, based on / calculated from Bergh (1882), are of a single 40 mm, live specimen of F. vicina (lost holotype).
Body length/width 4.7. [Rovinj specimen 4.2.]
Propodial tentacles protrude 3 mm each side of foot. [Rovinj 2 mm, similar in proportion to its smaller length.]
Bright rosy red head, particularly intense on the front and under the neck (1).
Long oral tentacles nearly twice as long as rhinophores, 25% of body length.
Almost colourless body shows viscera, such as the elongated, yellow-white hermaphrodite gland (2).