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(Wollebaek, 1912)

Description:
Body long, thorax usually thick anteriorly, anterior part of abdomen thick, posterior part slender. Tentacular ridge and upper lip broad. Tentacles numerous, long; thick and thin ones present. Buccal segment ventrally forming a narrow, prominent lower lip. About 9 unpaired, narrow ventral shields followed by 4-5 paired ones, only 4-6 of the anterior unpaired ones distinct. Notopodial chaetae smooth or feathery, starting at segment 2. 17-19 thoracic chaetigers. Uncinigerous tori from first abdominal segment (P. plumosus-detail).

Size:
Up to 36 mm for about 100 segments.

Tube:
Unknown.

Colour:
In alcohol whitish.

Habitat:
On mixed bottoms of mud with sand; 40-150 m.

Distribution:
The Faeroes, western Norway, eastern North Sea, Skagerrak, Swedish west coast, Irish Sea, South Africa.

Polycirrus plumosus