Additional species of CHALCIDIDAE have been added to our fauna by the researches of Messrs. Perkins and Koebele (Bulletins 1, pts. 6 & 8 Hawaii 1905). In the _Encryritinae_ he describes 12 new species, most of them bred from the pupae of the Dryinids collected in Queensland, but a few from more southern regions. _Chalcerinys eximia_ is only ¹⁄₂₅ of an inch in length; is of a rich metallic green tint marked with black and brassy-yellowish tints, and is furnished with long antennae. It ranges from Bundaberg to Sydney. In the EUPELMINAE he describes one new species parasitic upon the parasite fly, _Pipunculus cinerascens_, under the name of _Anastatus pipunculi_. It is a bright metallic green and purple little creature about ¹⁄₁₂ of an inch in length. One species of the TETRASTICHINAE, which he calls _Ootetrastichus beatus_, has been bred from the eggs of leaf-hoppers from both Queensland and Fiji, while another parasite on the eggs of a Jassid embedded in the branchlets of a Eucalyptus was bred in Southern Queensland. Perkins describes it under the name of _Pterygogramma acuminata_, a tiny creature not ¹⁄₂₅ of an inch in length, of general brown and yellowish tints. [Illustration: =Fig. 47.=--_Megastigmus brachychitoni_ (Froggatt) ♀. A yellow and brown Chalcid, bred from the large fleshy galls on the kurrajong trees. (“Agricultural Gazette,” N.S.W.)] [Illustration: =Fig. 48.=--_Coelocyba viridilineata_ (Froggatt). A pale yellow and green Chalcid infesting the large fleshy galls on the kurrajong trees. (“Agricultural Gazette,” N.S.W.)] Five species of the parasitic wasps belonging to the MYMARIDAE are described from Queensland. They are all tiny little creatures with slender feathered wings and long legs. They deposit their eggs in the eggs of different species of leaf-hoppers, and some species are very abundant. Four species of the more robust parasites belonging to the Genus _Aphanomerus_ are also described as egg parasites from Queensland. After studying the galls and insects from the wattles which I described in the Proceedings of the Linnean Society 1892, as belonging to the Cynipidae, Dr. Mayr finds that the insects will not fit into any known genera, so he has formed the Genus _Trichilogaster_ to contain _T. maideni_, which forms galls on the branchlets of _Acacia longifolia_, and _T. a-longifoliae_, which aborts the flower buds of the same wattle into oval or rounded red and yellow galls as big as marbles. He describes a third species I sent him, _T. pendulae_, forming rounded galls on _Acacia pendula_, and has made the remarkable discovery that the tiny wasp deposits a female egg, which forms the central cavity on the gall with a second male egg in a small cavity on the side of the same gall, so that a male and female wasp is always produced from each gall, and he thinks this will be the case with our two common species when they are examined.