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(Malmgren, 1866)

Body short, conical, tapering towards the scaphe.
Tentacular membrane low, broad, usually not folded and bearing 26-35 points. Dorsal brim smooth. Paleae are moderately long, with sharp tips, 12-15 on each side.
Notopodial chaetae on 17, uncini on 12 segments.
Scaphe with lobed margin in the frontal part, hind part nearly smooth. Anal tongue moderately long, pygidial cirrus very small, wart-like.

Up to 55 mm.

Slightly curved, conical masonry of sand grains up to 77 mm long and 10 mm wide.

In life transparent greyish with red gills. In alcohol yellowish, often with a reddish-brown coating on flat anterodorsal surface and chaetae of segment 3.

In limited depths, to less than 100 m or to more than 200 m in northern Norwegian fjords.

Canadian Atlantic, New England, Alaskan and Canadian Arctic, Siberian Arctic, Bering Sea, Alaskan Pacific, Sea of Okhotsk, Japan. East Greenland, Iceland, the Faeroes, Svalbard, Northern Norway, Barents Sea.

Pectinaria hyperborea