Summary
This paper reports new data on Australian aegid isopods of the genera Aega, Rocinela and, new to Australia, Alitropus. Aega laevis (Studer) is redescribed. New synonymies reported are Aega meinerti (= A. serripes), A. ommatophylax (=A. vigilans) and A. spongicola (=A. nodosa).
The status of Aega cyclops is questioned. The following new species are described: A. lethrina sp. nov., A. coroo sp. nov., and A. beri sp. nov. Descriptive notes and figures are given for A. quadratisinus and A. synopthalma. Rocinela oculata and Alitropus typus are recorded for the first time from Australia. Discussion is given on the taxonomy of the family.