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(Lovén, 1846)

Description:
This is one of the largest British coryphellids, reaching 50 mm in length, having a translucent white body bearing a highly characteristic pattern of opaque white superficial stripes and blotches, taking the form in typical specimens of (a) a median dorsal line which bifurcates anteriorly, passing on to the oral tentacles, (b) a similar line down each flank, uniting on the metapodium with the median line, (c) a line down the back of each rhinophore from a white tip, (d) a line on the anterior face of each ceras, and (e) a sub-terminal broad band on each ceras. The cerata are clustered in 5-8 groups; the digestive gland lobes vary in colour from dark brown through reddish brown to crimson, with rare examples exhibiting green cerata (perhaps as the result of starvation).

Habitat:
Its principal food is the hydroid Tubularia indivisa.

Distribution:
This species occurs in offshore situations all around the British Isles, between 20 and 40 m in depth (Distr. C. lineata). Elsewhere, it has been found in abundance in the Mediterranean Sea (to Naples) and along the European Atlantic coasts to Norway and the Arctic Circle.

Coryphella lineata