A taxonomic report on hyperiid amphipods collected during the period 1970-1977 from waters off New South Wales, and in 1989 from off Sydney and slightly north-east of Brisbane, is presented. The collection consists of sixty one species of which nineteen are new records for Australian waters. Taxonomic features of all of the latter, and some of the lesser known species, are illustrated. A brief diagnosis and a list of synonymies is given for each species and remarks on systematics to aid future identification and comments on taxonomic difficulties are provided where appropriate. Most of the species represent a tropical or warm-temperate fauna indicating the influence of warm-core eddies in the Tasman Sea.