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Four new species of Psyllobora Chevrolat, 1837 (P. batesi, P. borgmeiri. P. gorhami and P. huancayensis) from Neotropical Region are described and illustrated.

Psyllobora abancayana sp. n. and P. equatoriana sp. n. are described and illustrated.

A review of the original descriptions and available types of the South American freshwater stingrays Trygon aiereba Müller & Henle, 1841, Trygon strogylopterus Schomburgk, 1843 and Disceus thayeri Garman, 1913 indicates that these three nominal species are synonymous. The senior name, placed in the monotypic genus Paratrygon Duméril, 1865, established for Trygon aiereba, is available and valid. Based on its description, T. aiereba is a freshwater stingray. Therefore, this taxon is not the same as Raja ajereba Walbaum and Raja orbicularis Schneider, both names established for the marine "Aiereba" of Marcgrave, and which preferably should be treated as nomina dubia. Paratrygon does not replace Potamotrygon Garman, 1877 as the type genus, because the family name Potamotrygonidae Garman, 1877 has priority over Paratrygonidade Gill, 1893.

Os autores revêem o gênero Aristobyrsa Drake & Poor, 1937 e descrevem como nova A. uaupesensis n.sp., Uaupés, Brasil. Figuras de corpo inteiro e da genitália do macho das duas espécies incluídas no texto são apresentadas.

An introduction to the topic of biological data bases is provided, including some important bibliography, allied with our personal experience with the common available software. We focused taxonomic data not only big collections, but individual projects with particular organisms and more specific approaches

New taxa described: Neomallocera, gen. n., type-species, Mallocera opulenta Newman, 1841; Protomallocera, gen. n., type-species, Mallocera hilairei Gounelle, 1908; Championa chemsaki, sp. n. (Mexico: Chiapas); Parasphaerion, gen. n., type-species, P. granulosum, sp. n. (Suriname); Mephritus quadrimaculatus, sp. n. (Bolivia: Cochabamba). M. castaneus, sp. n. (Peru: Pasco); M. fraterculus, sp. n. (Peru: Cajamarca); Nesostizocera suturalis. sp. n. (Peru and Ecuador); Morphaneflus, gen. n., type-species, M. prolixus, sp. n. (Argentina: Salta, Jujuy); Amethysphaerion eximium, sp. n. (Ecuador); A. jocosum, sp. n. (Brazil: Espírito Santo); A. submetallicum, sp. n. (Brazil: Minas Gerais); A. guarani, sp. n. (Paraguay); Aposphaerion punctulatum, sp. n. (Brazil: Amazonas); Pilisphaerion, gen. n., type-species, P. exoticum, sp. n. (Brazil: Pará); Adiposphaerion, gen n., type-species. A. rubrum, sp. n. (Brazil: Amazonas); Minipsyrassa guanabarina, sp. n. (Brazil: Rio de Janeiro); Sphaerioeme, gen. n., type-species, S. rubristerna, sp. n. (Suriname, Brazil: Goiás, Mato Grosso, Minas Gerais, São Paulo, Paraná); Apoclausirion. gen. n., type-species, A. nigricorne (Brazil: Mato Grosso). Mallocera pickeli Melzer, 1931 is considered a synonym of M. simplex White, 1853. Psyrassa trinidadensis Gilmour, 1963 is transferred to the genus Amethysphaerion. Keys to the genera related with Mallocera and to the species of Amethysphaerion are added.

O autor descreve uma espécie nova de Deraeocapsus Knight, 1921 e três de Cylapinae Kirkaldy, 1903, como segue: Deraeocapsus panamensis sp. n., Fortuna, Panamá; Amapacylapus englemani sp. n., Canal Zone, Panamá; Cylapocerus rondoniensis sp. n., Rondonia, Brasil e Peltidocylapus tapirapensis sp. n., Mato Grosso, Brasil. Figuras de corpo inteiro são apresentadas.

The female of Wulfila argentina Platnick, 1978 is described and the epigynum is characterized and illustrated for the first time. The occurrence of the species is registered for the Rio Grande do Sul, Brasil

The author revalidates the genus Sarcopromusca Townsend, 1927 including two species: S. pruna (Shannon & Del Ponte, 1926) and S. sarcophagina (Wulp, 1896). The former is herein redescribed with illustrations and known geographical distribution. A key to distinguish Morellia Robineau-Desvoidy, 1830, Orthellia Robineau-Desvoidy, 1830, Pyrellia Robineau-Desvoidy, 1830 and Sarcopromusca Townsend, 1927 is also presented.

In this paper presents descriptions of four species belonging to the genus Sylliminophora Speiser, 1923 with contents of the late Dalcy Albuquerque are given. The male genitalia of S. atrovittata/Stein, 1904) is ilustrated.

Celaenorrhinus shema mercedensis, ssp. n. de La Mercede e Rio Colorado, Peru e Cochabamba, Bolívia; Phocides pialia intermedia, ssp. n. de Minas Gerais, Brasil; Corticea diamantina, sp. n. de Minas Gerais, Brasil; Artines tobiasi sp. n. de Minas Gerais, Brasil; Cymaenes albiventris albiventris, sp. n. do Maranhão, Brasil; Cymaenes albiventris capixaba, ssp. n. do Espirito Santo, Brasil; Papias cascatona, sp. n. de Minas Geras, Brasil; Lerema caraca, sp. n. de Minas Gerais e Espirito Santo, Brasil; Vettius ploetzii morretesi, ssp. n. do Paraná e Rio Grande do Sul, Brasil Propapias, gen. n., tipo: Rhinthon proximus Bell, 1934, única espécie incluída. Celaenorrhinus songoensis saroma Evans, 1952, comb. n.; Celaenorrhinus songoensis tonio Evans, 1952, comb. n. Lerema duroca duroca (Ploetz, 1883), comb. n. e sp. rev. Lerema duroca lenta Evans, 1955, stat. n. Eumesia eburones inornata (Bell, 1937), comb. n. e stat. n., Eprius veleda obrepta (Kivirikko, 1936), comb. n. e stat. n., Phocides zancleius 1932 syn. n. de Phocides pialia (Hewitson, 1857); Dalla eburones elna Evans, 1955 syn. n. de Eumesia eburones inornata (Bell, 1937); Staphylus holaphegges Dyar, 1913 syn. n. de Eprius veleda veleda (Godman, 1901); Eprius veleda palta Evans, 1955 syn. n. de Eprius veleda obrepta (Kivirikko, 1936); Lerema elgina Schaus, 1902 syn. n. de Lerema duroca duroca (Ploetz, 1883). Dalla Mabille, 1904 syn. n. de Eumesia Felder &. Felder, 1867, n. rev, Eumesiinae Felder & Felder, 1867, n. rev.

Descriptions and illustrations of external morphology of all immature phases of Ophyra aenescens (Wiedemann, 1830) and puparium of Ophyra chalcogaster (Wiedemann, 1824) are presented.

The immature stages of Platyphora zonata (Germar, 1824) are described, with comments on habits.

Os autores descrevem Cangatiella arandasi, gen. n. sp. n., parasito de "cangati", Parauchenipterus galeatus. O gênero se caracteriza por apresentar os vitelinos dispostos entre os canais excretores e pela presença de um sulco longitudinal que percorre o estróbilo e que, juntamente com sulcos transversais, sugere sistema de canais. Trata-se da primeira referência do encontro de proteocefalídeos neste hospedeiro.

The morphology of the testicles of some Brazilian species of Diplopoda is described. One type is scalariform, with two deferent ducts and the other consists of some single deferent duct. Phyllogenetic considerations on the structure are made.

The condition of certain neglected structures and their possible importance to the classification of the family Tabanidae are studied. The front coxae are considered as belonging to two types: 1) short and robust; 2) long and slender. The posterior edge of the meso-katepimeron presents two conditions: 1) without projection, 2) with backward projection. Similar conditions are found in the meso-Katepisternum, but with intermediate conditions. These characters are discussed in relation to the system proposed for the family by Mackerras. Conditions 1 and 2 of the former two structures separate, respectively, the Pangoniinae and Scepsidinae from the Chrysopsinae and Tabaninae. Condition 2 of the third structure seems to be developing independently in different groups of Tabaninae, with varying degrees of development.

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.

Comparative morphometrics of Ctenosciaena gracilicirrhus, Paralonchurus brasiliensis and Micropogonias furnieri (Teleostei: Sciaenidae) by multivariate analysis of truss networks. Morphological differentiation among three species of sciaenid fishes, Ctenosciaena gracilicirrhus, Paralonchurus brasilliensis and Micropogonias furnieri, was analyzed by multivariate statistical techniques, using measuraments obtained from truss networks based on anatomical landmarks. Principal components analysis of interlandmark distances defined by the truss system showed that the individuais of Ctenosciaena gracilicirrhus are different from those of the other two species in relation to shape, being more similar to the individuals of Micropogonias furnieri in relation to size.

Cynolebias leitaoi n. sp. is described from Mucuri, State of Bahia. This new species is related to the group having females without ornamentation pattem in the body and fins. The most distinctive character observed is the pattern of vertical bars in the flank associated to the presence of small drops in the flank and anal, caudal and dorsal fins, of the males.

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