Two new species of Eunice from coastal islands of the state of São Paulo are described, both of them living in colonies of the coral Mussismilia hispida. One species was also collected from a sandy beach. Eunice insularis has short palps and antennae in a horseshoe, without articulations; most of the specimens studied are abranchiate, but some have one branchial filament in a few parapodia. Eunice marconii also has palps and antennae without articulations, in a horseshoe, and 1-3 long slender branchial filaments from the anterior to posteriormost chaetigers. These new species are compared with the morphologically closest congeners.6514757Carrera-Parra, L.F., Salazar-Valejo, S.I., A new genus and 12 new species of Eunicidae (Polychaeta) from the Caribbean Sea (1998) J. Mar. Biol. Ass. U. K, 78, pp. 145-182Duarte, L.F.L., Nalesso, R.C., The sponge Zygomicale parishii (Bowerbank) and its endobiotic fauna (1996) Estuar. Coast. Shelf Sci, 42, pp. 139-151Hartman, O., The marine annelids erected by Kinberg, with some notes on some other types in the Swedish State Museum (1948) Ark. Zool. Stockholm, 42 (1), pp. 1-137Hartman, O., Polychaetous annelids erected by Treadwell, 1891 to 1948, together with a brief chronology (1956) Bull. Am. Mus. Nat. Hist, 109 (2), pp. 239-310Fauchald, K., A review of the genus Eunice based upon type material (1992) Smithson. Contrib. Zool, 523, pp. 1-421Lana, P.C., (1981) Padrões De Distribuiçāo E Diversidade Específica De Anelídeos Poliquetos Na Região De Ubatuba, Estado De São Paulo, , M.Sc. dissertation, Universidade de São Paulo. 111 ppLu, H., Fauchald, K., Description of Eunice weintraubi and E. wui, two new species of eunicid polychaetes from Northern Gulf of Mexico (1998) Proc. Biol. Soc. Wash, 111 (1), pp. 230-240Miura, T., Japanese polychaetes of the genera Eunice and Euniphysa: Taxonomy and branchial distribution patterns (1986) Publ. Seto Mar. Biol. Lab, 31 (3-6), pp. 269-325Miura, T., New or little known species of the family Eunicidae (Annelida Polychaeta) from Japan (1987) Proc. J. Soc. Syst. Zool, 36, pp. 1-9Morgado, E.H., Amaral, A.C.Z., Anelídeos poliquetos associados a um briozoário. I. Eunicidae, Lumbrineridae, Lysaretidae e Dorvilleidae (1981) Iheringia (Sér. Zool.), 60, pp. 33-54Nalesso, R.C., Duarte, L.F.L., Pierozzi I., Jr., Tube epifauna of the polychaete Phyllochaetopterus socialis Claparède (1995) Estuar. Coast. Shelf Sci, 41, pp. 91-100Nonato, E.F., (1981) Contribuição Ao Conhecimento Dos Anelídeos Poliquetas Bentônicos Da Plataforma Continental Brasileira, Entre Cabo Frio E O Arroio Chuí, , Tese de Livre Docência, Universidade de São Paulo. 246 ppNonato, E.F., Luna, J.A.C., Anelídeos poliquetas do Nordeste do Brasil. I. Poliquetas bentônicas da costa de Alagoas e Sergipe (1970) Bolm. Inst. Oceanogr., S. Paulo, 19, pp. 57-130Orensanz, J.M., The eunicemorph polychaetes from Antarctic and Subantarctic seas (1990) Biology of the Antarctic Seas XXI. Antarctic Res. Ser, 52, pp. 1-183. , Kornicker, L. S. (ed.)Orrhage, L., On the innervation and homologues of the anterior end appendages of the Eunicea (Polychaeta), with a tentative outline of a fundamental constitution of the cephalic nervous system of polychaetes (1995) Acta Zool. Stockholm, 72, pp. 233-246Rullier, F., Amoureux., L., Annélides polychètes. Campagne de la Calypso au large des côtes atlantiques de l'Amérique du Sud (1961-1962) (1979) Ann. Inst. Océanogr, 55, pp. 10-206Treadwell, A.L., Leodicidae from the West Indian region (1921) Publ. Carn. Inst. Washington, 15 (293), pp. 1-131