title: Four new species of Polycirrus Grube, 1850 (Polychaeta: Terebellidae) from Campos Basin, southeastern Brazil.
abstract: Four new species of Polycirrus were collected at the Campos Basin, state of Rio de Janeiro, during a survey coordinated by CENPES/PETROBRAS under the scope of the project, "Environmental Heterogeneity in the Campos Basin". These species are P. nonatoi sp. nov., P. papillosus sp. nov., P. breviuncinatus sp. nov., and P. habitats sp. nov. All these species are herein described and compared with the morphologically most similar congeners. In addition, a key is provided for the identification of the species of Polycirrus which have been originally described for the Brazilian coast.
authors.affiliation: Laboratório de Poliquetologia, Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, R. do Matão, travessa 14, n. 101, 05508-090, São Paulo, SP Brazil. o.carrerette@ib.usp.br
authors.forename: Orlemir
authors.initials: O
authors.lastname: Carrerette
authors.forename: João Miguel De Matos
authors.initials: JM
authors.lastname: Nogueira
mesh_terms: D000818:Animals; D001938:Brazil; D017753:Ecosystem; D008855:Microscopy, Electron, Scanning; D011077:Polychaeta / Q000033:anatomy & histology* / Q000145:classification* / Q000502:physiology / Q000648:ultrastructure; D013045:Species Specificity