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This study reports the occurrence of the oceanic basslet (Howellidae) in Brazilian waters. Bathysphyraenops simplex Parr, 1933, a rare species with a worldwide distribution, is recorded for the first time in Brazilian waters, based on three specimens collected off Rocas Atoll and Rio Grande do Norte. Howella atlantica Post & Quéro, 1991, known from the western and eastern Atlantic Ocean (64°N to 21°S), including waters around the Trindade Island, is reported off Rio Grande do Norte, Pernambuco, Rocas Atoll, and the Fernando de Noronha Archipelago. In addition, specimens previously reported in the literature as Howella brodie Ogilby, 1899 are reidentified as H. atlantica, extending the known distribution of this species to northeastern and southeastern Brazil. Measurements and counts for all specimens examined are provided. [ABSTRACT FROM AUTHOR]

Two Limnohalacarus species are reported from the southern Brazilian state of Rio Grande do Sul, Limnohalacarus cultellatus Viets, 1940 and L. mamillatus Fain & Lambrechts, 1987, originally described on the basis of individuals from the Caribbean region and aquaria in Belgium, respectively. The former species is also known from Madagascar, Hungary, North America, and was referred to Brazil and El Salvador in the literature. The latter species is also known from Western Australia. [ABSTRACT FROM AUTHOR]