Three species of nematodes were collected from some Malayan frogs and toads. Two of these are bursate nematodes, one of which belongs to a new genus for which the nameBatrachostrongylusgen. nov. is proposed. The genusBatrachostrongylushas structural features of both the families Strongylidae and Trichostrongylidae. The other bursate nematode, namelyOswaldocruzia hoeppliiHsu is widely distributed in the Far East and this is the first record from the Malaysian region. This species shows considerable variation throughout its range. Another new species,Abbreviata bufonissp. nov. is from Bufo asper Boulenger. Although the larval form ofAbbreviata ranae(Walton), the only representative of the genus in Amphibia has been recorded from U.S.A., this is the first record of an adultAbbreviataparasitic in Amphibia.