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(Sars, 1835)

Description:
Body thick, abdomen tapering towards pygidium. Prostomium with a pair of prominent glandular ridges and many eyespots. Gills in two groups; the four gills of each group arranged in two transverse rows in a rhomboid pattern, the inner posterior pair united by a raised flap.
10-23 very large, blunt or pointed golden chaetae on each side in front of gills. (A. gunneri-detail).
Seventeen thoracic segments with notopodia with capillary chaetae, the posterior fourteen also with neuropodia with uncini. Uncini with one row of 4-7 teeth. Fifteen abdominal uncinigerous segments.
Pygidium with two long lateral cirri.

Size:
Over 25 mm.

Tube:
A thin layer of secretion encrusted with a thick, relatively firm layer of mud or clay, usually with plant fragments in a characteristic ringlike pattern.

Colour:
Unknown, but without pigmentation.

Habitat:
Unknown.

Distribution:
Western Norwegian coast, North Sea, English Channel.

Amphicteis gunneri