Nine new species belonging to the Porcellidiidae are described from Queensland and New South Wales, Australia. Two new genera Ravania gen. nov., and Synurus gen. nov., have been erected to accommodate three new species from Queensland, Ravania wellsi sp. nov., R. doliocauda sp. nov., and Synurus ctenocheirus sp. nov. Two other new species, Acutiramus bipunctatus sp. nov., and Kensakia australis sp. nov., are also described from Queensland. Four new species are added to the New South Wales list, Kushia spathoides sp. nov., Acutiramus edenensis sp. nov., A. cumulus sp. nov., and A. iwasakii sp. nov. A Japanese species, Clavigofera pacifica, is recorded from NSW. This brings the total number of species known for the East coast of Australia to 30. The importance of the male antennule in taxonomy of the family is discussed.