Eunicid polychaetes (Annelida) from Scandinavian and adjacent waters. Family Eunicidae

Four species of Eunice [E. pennata (0. F. Müller, 1776), E. dubitata Fauchald, 1974, E. norvegica (Linné, 1767), and E. harassii (Audouin & Milne-Edwards, 1833)] and one species of Marphysa [M . sp., close to M. sanguinea (Montagu, 1815)] are described and a branchial formula is proposed. The genus Marphysa is reported from Scandinavian waters for the first time. The specimen of Marphysa studied has tridentate composite falcigers as well as composite spinigers in the anterior setigers, whereas M. sanguinea has been reported to have composite spinigers only. The geographical distribution of all five species is given and intraspecific variation is discussed. Reports of E. oerstedii (Stimpson, 1853) from Europe are discussed and specimens of this species are compared with E. dubitata . The behaviour of E. pennata and E. dubitata has been observed in aquaria.