Abstract
1. A description is given of a new filarial parasite,Deraïophoronema freitaslentin.sp. from the mesentery of the giant anteater,Myrmecophaga tridactyla, from British Guiana.2. A proposed reclassification ofDipetalonemaand related genera is given. Genera considered as valid areAcanthocheilonema, Breinlia, Dipetalonema, Mönnigofilaria, DeraïophoronemaandTetrapetalonema. Molinemais considered to be a synonym ofAcanthocheilonema.3. A new genus,Johnstonema, is erected for the reception ofJ. annulipapillatum(Johnston & Mawson, 1938).
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