In Ashmead’s “Monograph of the Proctotrypidae of North America” nearly 600 species are described, and a number have been added since these were recorded in 1893. The Australian species are probably numerous, judging from my own observations when studying gall-making insects; but very few have been described. Westwood described four in his “Thesaurus Entomologicus, Oxford 1874,” belonging to the BETHYLLIDES, the peculiarities of which he defines, and figures with coloured plates. Ashmead describes another (Pro. Linn. Soc. N.S.W. 1900) under the name of _Ateleopterus longiceps_, obtained by me in a hollow twig of a wattle tree; a shining black ant-like creature about ⅙ of an inch in length, rusty red legs, and transparent wings clouded at the base, probably parasitic on the larva of some wood boring beetle. _Sierola antipoda_ was bred from the curious bract-like gall of _Cecidomyia frauenfeldi_ on the twigs of Melaleuca bushes. A second species of this genus was collected by Webster, and forwarded to Ashmead, who named it after the sender. In 1890 Riley described “An Australian Hymenopterous parasite of the fluted scale” in “Insect Life” which he named _Ophelosia crawfordi_; it is a tiny reddish brown wasp with a shining black body, and the wings obscurely barred with smoky brown; it is easily bred from this mealy bug, which it greatly keeps in check. _Goniozus antipodum_, described by Westwood from S. Australia, is a little shining black ant-like wasp which has been lately discovered destroying the grubs of codlin moth both in S. Australia and N.S. Wales. The larvae feed upon the outside of the grub, burying their heads in the tissue, and when full grown spin a loose silken cocoon. * * * * * Perkins has recently added a number of new species to this family belonging to the DRYINIDAE. In his Bulletins Hawaii 1905, Nos. 1 & 10, “Leaf Hoppers and their Natural Enemies,” he describes 45 new species, chiefly collected by Koebele in Queensland, but some from the neighbourhood of Sydney. These curious little proctotrypids are parasitic upon the larvae and pupae of the small homopterous insects commonly known as Leaf or Frog-hoppers (Families JASSIDAE and FULGORIDAE). The adult wasp captures the insect, holding it with its curious clawed feet while it deposits its egg in its body; when full grown the larva spins a white silken cocoon, from which the active winged insect emerges in about 18 days. * * * * *