Body long and slender.
Prostomium with two eyes and a small terminal papilla, without antenna. Prostomium and peristomium are fused and form a conical, long head with a narrow tip. Anterior part of body often clearly demarcated by a transverse invagination.
Notopodial postchaetal lobes on the first two chaetigers tiny, becoming longer and finger-like posteriorly. Very small neuropodial postchaetal lobes present.
Chaetae are curved capillaries with narrow wings. Up to three modified chaetae present from chaetiger 50. They are thick, distally bent with a subdistal bunch of short hairs on the concave side (P. fulgens-hook).
Up to 25 pairs of broadly leaf-like gills, starting at chaetiger 4.
Pygidium with two long and one shorter cirrus.
Up to 30 mm for 120 segments.
Whitish with greenish pigmentation.
On sand, eulittoral to 100 m.
North Atlantic to Mediterranean, North Sea to Öresund.