STM photographs of live specimens of several Terebellides species in lateral view. A Terebellides europaea Lavesque, Hutchings, Daffe, Nygren & Londoño-Mesa, 2019 (ZMBN 116343) B Terebellides ronningae sp. nov. (ZMBN 116349) C, D Terebellides norvegica sp. nov. (GNM 15131 and GNM 15130 respectively). Abbreviations: babv – branchial afferent blood vessel; bbv – branchial blood vessel; bdl – branchial dorsal lobe; bst – branchial stem; bvl – branchial ventral lobes; cbh – contractile branchial heart; dg – digestive gland; fi – fore intestine; fs – fore stomach; hs – hind stomach; loli – lower lip; oes – oesophagus; ooc – oocytes; tm – tentacular membrane.