The Australian Nymphidae (s.l.) are revised, and keys and illustrations provided to aid separation of all genera and species. Of 20 species recognized (in seven genera), four (Nymphes. three; Myiodactylus, one) are described as new. Myiodactylus nebulosus McLachlan. described from New Guinea, is tentatively recorded from Australia for the first time, and two species of Osmylops raised by Navas are subjectively synonymized: schraderi with sejunctus (Walker) and hulstaerti with armatus (McLachlan).