Bdelloid rotifer research in Australia is reviewed, the current systematic status of the group is summarized. Based on a survey of floodplain and alpine sites in northern Victoria and Tasmania conducted in January-February 1999 we recorded 20 new bdelloid species for Australia. This brings the continental record to 106 species. The description of Philodinavus aussiensis n.sp. is given, with SEM images of its trophi. Trophi of three more bdelloid species are here presented.