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(Sars, in Jensen, 1878)

Description:
The body is elliptical with rounded ends. Up to 16 mm long and 9 mm wide. Marginal tentacles are small, but distinct, with eyes at their bases and beneath ventral surfaces (C. papillosus-eyes). Ground colour is yellowish-white; dorsal surface with numerous small brownish-red papillae or tubercles. The mouth is situated close behind the cerebral organ. The pharynx is short. The intestinal trunk and its six or seven pairs of lateral branches are variously coloured, according to the colour of ingested prey.
The male genital pore is situated close behind mouth. The female pore is about midway between anterior margin of body and subcentral ventral sucker. The uterine canals have several pairs of vesicles (C. papillosus-diagrammatic).

Habitat:
Among seaweeds, sponges and compound ascidians in depths to 60 m.

Distribution:
Ranges from Scandinavia to western Mediterranean. Records also from Plymouth and Isle of Man and various Irish localities.

Cycloporus papillosus