124 HYMENOPTERA OF SARAWAK. 



which become gradually longer below, the lower ones reaching 

 beyond the middle of the mesopleurae. Scutellum stoutly 

 keeled laterally its apex with 3 or 4 irregular, curved keels. 

 Post-scutellum keeled. Metanotum behind the tranverse keel 

 smooth, stoutly irregularly, mostly longitudinally striated, the 

 striae in places forming almost reticulations, especially at the 

 sides ; metapleurae above irregularly reticulated. Transverse 

 median nervure interstitial ; disco-cubital nervure roundly curv- 

 ed ; first discoidal cellule distinctly shorter than the second, 

 the recurrent nervure being received about 4 times its length 

 behind the transverse cubital, its base not half the length of 

 the apex. 



Trichonotus, gen. nov. 



Hind wings with the cubital nervure unbroken ; disco-cubi- 

 tal nervure not interstitial with the discoidal ; 3rd discoidal 

 cellule not narrowed at the base ; 2nd nearly twice as wide at 

 apex as at base. Labrum hidden. Chypeus projecting, nar- 

 rowed and rounded at the apex. Thorax thickly covered with 

 long pubscence, the mesonotum reticulated, scutellum distinctly 

 keeled laterally. Median segment produced at apex, depres- 

 sed at base ; petiole dilated above at apex. Claws minute, sim- 

 ple. Hind tibiae longer than tarsi. Recurrent nervure received 

 beyond transverse cubital, the transverse median shortly beyond 

 transverse basal. Basal joint of hinder tarsi not thickened, 

 slightly longer than the other joints united. 



Comes close to Atrometus Foer. The characteristic features 

 are the unbroken transverse median nervure in hind wings, the 

 large, flat, keeled scutellum, the petiole dilated above and the 

 longish hinder tibia? compared with the tarsi. 



Trichonotus reticulatus, sp. nov. 



Black, the head and thorax densely covered with grey 

 pubescence ; the face, inner orbits, the lower outer, scape of 

 antennae and tegulae, lemon-yellow ; the sides and lower part 

 of petiole yellow ; the upper part behind the dilated apex dark 

 rufous, the top of the 3rd pale yellow, the apices of the others 



Jour. Straits Branch 



