Data on Thelazia californiensis Price, 1930 are presented. The importance of this eye nematode is also related to a few human cases due to this parasite in the USA. This is the first report of T. californiensis occurring in a South American host, Mazama gouazoupira (Fischer, 1814), which is also a new record for the species.

A survey of nematode species parasitizing Brazilian mammals is presented, with enough data to provide their specific identification. The tirst section refers to the survey ofthe species, related to 21 superfamilies, 45 families, 160 genera and 495 species that are illustrated and measurement tables are given. The second section is concerned to the catalogue ofhost mammals which includes 34 families, 176 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.

Twenty three species of Thelaziinae Skrjabin, 1915 were referred in Brazil. Hempelia hempeli Vaz, 1936, Thelazia anolabiata (Molin, 1860), T. aquilina Baylis, 1934, T. campanulata (Molin, 1858), T. iheringi Travassos, 1918 and T. travassosfreitasi Cristofaro & Rodrigues, 1979. That included in the Oswaldo Cruz Helminthological Collection were reviewed. Dryocopus lineatus lineatus (Linnaeus), Pipile cumanensis nattereri Reich and Ramphastus dicolorus Linnaeus are new host records for Thelazia anolabiata (Molin, 1860) and Rostrhamus sociabilis (Vieill.) is a new host record for Thelazia campanulata (Molin, 1858).

A survey of nematode species parasitizing Brazilian birds is presented, with enough data to provide their specific identification. The first section refers to the survey of the species, related to 17 superfamilies, 23 families, 75 genera and 257 species that are illustrated and measurement tables are given. The second section is concerned to the catalogue of host birds which includes 54 families. 361 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.

Plagiorchis vicentei, sp.n. is described from the small intestine of the lizard, Hemidactylus mabouia (Moreau de Jonnès, 1818), from Teresópolis, Rio de Janeiro, Brasil. The new species differs from P. didelphidis (Parona, 1896) by the smaller size of body, by the presence of spinous tegument and ventral sucker smaller than oral sucker; from P. parumbursaitus Freitas & Dobbin Jr., 1961 by the smaller size of body and suckers and the bigger size of eggs; from P. rangeli Artigas & Zerpa, 1961 by the bigger size of suckers and eggs; and front P. freitasi Vicente, 1978 by the smaller size of body, by the bigger size of eggs and by the different position of gonads that in the new species are close to the ventral sucker.

A survey of nematode species parasizing Brazilian reptiles is presented, with data enough to provide their specific identification. The first section refers to the catalogation of the species, related to 127 superfamilies, 23 families, 55 genera and 121 species that are figured and included in measurement tables. The second section is concerned to the catalogue of host reptiles, with 16 families, and 90 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.

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.