122 Cameron, Hymenoptera Orientalia. 



mesopleurse ; the spiracular region is bounded by two 

 keels and is strongly transversely punctured. The tibiae 

 and tarsi are spinose, the coxae thickly, the femora more 

 sparsely covered with shorter, white hair. The petiole is 

 black, except at the apex ; the second segment has the 

 basal third black ; the sheaths of the ovipositor black. 

 On the median segment there are five clearly defined 

 arese, besides a small central one at the base; the spiracular 

 region has two complete keels ; the tibiae and tarsi are 

 more strongly spinose than usual ; the spines on the claws 

 are stout. 



Trathala, gen. nov. 



Wings without an areolet. Claws pectinated. Meta- 

 thoracic spiracles oval. Spiracles of first abdominal 

 segment small, round, placed behind the middle. Clypeus 

 separated from the face, and with a large fovea on either 

 side at the base. Mandibles large ; the teeth subequal. 

 Head not dilated behind the eyes. Median segment 

 distinctly areolated. Wings short ; the recurrent nervure 

 is received on the outer side of the first transverse cubital ; 

 the transverse basal nervure is interstitial. Abdomen long, 

 compressed, and with a long ovipositor. Eyes bare, not 

 reaching to the base of the mandibles. Scutellum convex, 

 its sides and apex coarsely striolated. The apex of the 

 clypeus rounded. Farapsidal furrows only indicated at 

 the base of the mesonotum. 



This genus comes near to Campoplex, from which it 

 differs in the absence of an areolet, in the transverse 

 basal nervure being interstitial, in the greatly elongated 

 ovipositor, and in the median segment having distinct areae. 



Trathala striata, sp. nov. 

 Nigra; pedibus abdominisque apice rufis ; coxis trochan- 



