Three species of whale Balaenoptera borealis Lesson, 1828, B. physalus (Linnaeus, 1758) and Physeter catodon Linnaeus, 1758 captured in the Brazilian coast were necropsied for helminths. Balaenoptera borealis and B. physalus were infected by Crassicauda crassicauda (Nematoda, Tetrameridae) and Ogmogaster antarcticus (Digenea: Notocotylidae), which are referred for the first time in Brazil. Balaenoptera borealis was also infected by Lecithodesmus goliath (Digenea, Campulidae) and Bolbosoma turbinella (Acanthocephala, Polymorphidae). Physeter catodon was infected by Anisakis physeteris (Nematoda, Anisakidae), which is a new record to this host in Brazilian waters.

Morphometric data on larval and adult specimens of Angiostrongylus (Parastrongylus) costaricensis Morera & Céspedes, 1971 recovered from Swiss albino mice experimentally infected is presented. Infective larvae were obtained from parasitized veronicellid Sarasinula margínala (Semper, 1885) maintained in the laboratory. This is the first complete morphometric study regarding specimens of a Brazilian strain of A. (P.) costaricensis.

São reunidas neste trabalho todas as espécies de nematóides parasitas de anfíbios encontradas no Brasil, com dados suficientes para a sua identificação especifica. Na primeira parte que é o catálogo dos nematóides parasitos de anfíbios, são relacionadas nove superfamilias, quatorze famílias, vinte e quatro gêneros e sessenta e três espécies, sendo que destas, são dadas figuras e medidas. Na segunda parte que é o catálogo dos anfíbios hospedeiros, todos pertencentes à ordem Anura, são referidas seis famílias e cinqüenta e cinco espécies de anfíbios, estas com os nematóides respectivos. A identificação dos nematóides é auxiliada por chaves de determinação das superfamílias, famílias e gêneros, sendo a identificação específica feita através de quadros de medidas e figuras.

A survey of nematode species parasitizing Brazilian amphibians is presented, with data enough to provide their specific identification. The first section refers to the catalogation of the species, related to 9 superfamilies, 14 families, 24 genera and 63 species that are figurated and included in measurement tables. The second section is concerned to the catalogue of host amphibians of the order Anura, with 6 families, and 55 species and their respective parasite nematodes. The identification of these helminths is achieved by means of keys to the superfamilies, families and genera. Specific determination is induced through the figures and tables as above mentioned.