AUSTRALIAN HYMENOPTEBA CHALCIDOIDEA, VIII.—GIBAULT. 185 AUSTRALIAN HYMENOPTERA CHALCIDOIDEA— VIII.* ' The Family Miscogasteridae with Descriptions of New Genera and Species. By A. A. Girault. The forms do not seem numerous in the Australian fauna. Family MISC0GASTERIDJ3. Subfamily TRIDYMIN^E. Tribe TBIDYMINI. Genus GASTRANCISTRUS Westwood. 1. GASTRANCISTRUS MEN^TES (Walker). Miscogaster mencetes Walker; male, 1839, pp. 20-21. 2. GASTRANCISTRUS ROBERTSONI new species. Female: — Length, 1 mm. excluding the ovipositor, the latter extruded for a sixth the length of the abdomen. Metallic purple, the wings hyaline; middle tibiae pallid dusky; tarsi white. Thorax â– scaly, the propodeum more delicately so. Funicle joints all a litte wider than long, 2 quadrate, shorter than the pedicel. Hind wing with about eight lines of discal cilia. Much like Tetracampoides of A. P. Dodd of the Eulophidaj. Antennae 12-jointed, the funicle 5-jointed, two short ring-joints; they are inserted nearly at the mouth border, ventrad of the ends of the eyes; head oblong as in Spalangia, the abdomen short yet conic-ovate and produced beneath at apex, the ovipositor distinctly extruded a short distance. Marginal vein a little shorter than the submarginal and only two and a half times the length of the rather long stigmal, the postmarginal slightly longer than the stigmal. Submarginal vein distinctly broken. Mandibles 4-dentate, the teeth long, the outer distinctly the longest, slender. Parapsidal furrows distinct, curving off laterad before reaching the transverse pronotum. Propodeum with a median carina only. Abdomen sessile. Scutellum simple. Propodeal spiracle minute, round, at cephalic margin. Described from one female captured by sweeping on forest sand-ridges near coast, Tweed Eiver, May 9, 1914 (A. P. Dodd). Habitat: Chindera. New South Wales. Type: No. Hy3163, Queensland Museum, Brisbane, the specimen on a tag; head, pair of wings and a hind tibia on a slide. Respectfully dedicated to F. W. Robertson. * Contribution No. 31, from the Entomological Laboratory, Bureau of Sugar Experiment Stations, Bundaberg, Queensland.
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