Eleven species of Galatheidae and five of Porcellanidae are reported from the collections of the Endeavour off the Australian coast. Munida elegantissima De Man, M. japonica Stimpson, M. microps Alcock, and Galathea balssi Miyake and Baba are reported from Australia for the first time, and the latter two species are illustrated. Galathea whiteleggii Grant and McCulloch, an Australian species not collected by the Endeavour, is illustrated and compared with the closely related G. balssi. Earlier Australian records of the other 12 Endeavour species are cited, and range extensions are established for eight of them. Keys to the known Australian species of Munida and eastern Australian species of Galathea are presented.