186 MEMOIRS OF THE QUEENSLAND MUSEUM. 



EPENTEDON new genus. 



Female: — Head a little -wider than long, the antennae inserted below the middle, 10- 

 jointed, three ring and funicle joints, the distal joint of club terminating in the usual distinct 

 spine. Mandibles bidentate. Propodeum distinctly tricarinate, the median carina bounded on 

 each side by a sulcus whose lateral margin is carinated, forming three converging carina? on 

 the propodeum; lateral carinas present. Scutellum simple. Second segment of abdomen occupy- 

 ing a third of the surface, the others much shorter. Parapsidal furrows complete, deep and 

 distinct, narrowing cephalad. Pronotum transverse. Petiole of abdomen somewhat longer than 

 wide. Marginal vein nearly twice the length of the submarginal, the postmarginal vein 

 elongate, over twice the length of the sessile but long-elliptical stigmal, about a third the length 

 of the long marginal. Hind tibial spur normal. Like Pelorotelopsella Girault but the post- 

 marginal vein elongate, three ring-joints, lateral carinas present. Like Pleurotroppopsis but the 

 median carina of propodeum is bounded by sulci. 



Male: — Not known. 



1. EPENTEDON UNNOTIPENNIS new species. Genotype. 



Female: — Length, 1.70 mm. 



Metallic blue-green, rather dark, the wings hyaline but with a rather large, ovate smoky 

 brown spot appended from the knob of the stigmal vein and extending across the wing nearly 

 to caudal margin but most distinct as a round spot under the stigma. Legs yellowish brown, 

 the coxae concolorous, the antennae wholly concolorous; second ring-joint very short, the others 

 large; funicle 1 longest, 3 a little larger than the pedicel, oval, shorter than 1. Second tooth 

 of mandible truncate mesad. 



From one female reared from fleshy galls on gum, March 20, 1911 (F. P. Spry). 



Habitat: Melbourne, Victoria. 



Type: — In the National Museum, Melbourne, the above specimen on a tag, the head on 

 a slide. 



DEROSTENOIDES new genus. 



Female:- — Like Neoderostenus Girault but the propodeum with a curved lateral carina 

 whose mesal side is deeply sulcated. Mandibles strongly bidentate, the inner edge of the inner 

 (mesal) tooth with five or six fine teeth like the inner teeth in the mandibles of many ElachertinL 

 Meson of propodeum polished, convexed. Antennae with two ring-joints, the club 2-jointed, the 

 antennae 9-jointed, inserted somewhat below the middle of the face. Segment 2 of abdomen 

 occupying about a fourth of the surface, longest, the petiole short. Postmarginal and stigmal 

 veins short, subequal. Parapsidal furrows complete, extraordinarily thin, the scutum cephalad 

 declivous, the pronotum absent (not visible from above but the suture between the pro- and 

 mesothorax is on the neck). Hind tibial spur normal. Axillae advanced barely at all. 



Male: — Not known. 



1. DEROSTENOIDES NEGLECTUS new species. Genotype. 



Female: — Length, 0.80 mm. 



Dark metallic green, the wings stained rather deeply, the legs, scape and pedicel reddish 

 brown (coxae metallic), the pedicel suffused with dusky. Thorax nearly black, with polygonal 

 reticulation, the lines not raised, somewhat coarser on the scutellum which has a smooth spot 

 centrally at base. Funicle joints more or less globular and subequal, the second a little the 

 largest. Inner margin of first tooth of mandible minutely, slightly serrate. Pedicel longer 

 than funicle 1. 



Described from one female collected by Mr. A. M. Lea. 



Habitat: Cairns District, Queensland. 



Type : No. Hy 2485, Queensland Museum, Brisbane, the above specimen on a tag, the 

 bead on a slide. 



The genus is allied with Pelorotelopsella. 



