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(Rathke, 1843)

Body U-shaped, dorsally arched, ventrally flat.
Sixteen thoracic chaetigerous segments.
Epidermis densely papillated with filamentous papillae, encrusted with sand.
Prostomium and peristomium without eyes, with two grooved palps and 30-100 short filamentous gills in two groups, retractile.
Notopodial chaetae long capillaries, 2-11 per segment.
Neuropodial chaetae of the first chaetiger capillary, the others 3-4 very brittle, distally bent spines (B. villosa-detail).

Up to 40 mm for 35 segments.

Living animal greenish. In alcohol grey or brownish.

Sublittoral to 2000 m.

Antarctic and Subantarctic, Arctic, North Pacific, North Atlantic to Mediterranean, North Sea to Öresund.

Brada villosa