430 



ICH>-EUMONID;E. 



posteriorly truncate ; eyes large, pilose, convergent apically and 

 internally emarginate ; cheeks 

 wanting ; the prominent face, cly- 

 peus, all the orbits and the apically 

 subequidentate mandibles, flavous ; 

 frons with a band of striae, con- 

 stricted below ; occiput margined 

 and not quite transverse ; temples 

 not constricted. Antennce black, 

 with the scape flavous beneath. 

 Thorax with dense silverv pub- 

 escence, black, with a broad and 

 apically constricted auteradical 

 flavous patch on either side ; meso- 

 notum nude, dull and basally trans- 

 striate, with the distinct notauli 

 and their basal region irregularly 

 reticulate ; metathorax not caud- 

 ately produced apically ; metanotum 

 and its pleura? coarsely reticulate, 

 with the apices of the propleura3 

 strongly above, and the mesopleurae 

 more finely and closely, strigose. 

 Scutellum subconvex, flavous and 



Fig. 122. 

 Trichomma nigricans, Cam. 



glabrous, distinctly transverse and laterally carinate throughout. 

 Abdomen black and immaculate, with the terebra less than half its 

 length. Leys black, with the anterior coxae and trochanters 

 entirely stramineous, their femora and tibia? in front, and the 

 front femora entirely, flavous ; hind coxa? broadly basally above or 

 entirely, and all the calcaria, flavous ; hind trochanter more than 

 double the length of the trochanterellus, their femora basally 

 constricted. Winys hyaline, with the tegula? flavous, the stigma 

 and nervures black ; second recurrent emitted beyond the sub- 

 marginal nervure ; basal nervure not continuous through the 

 median ; second discoidal cell not much broader apically than 

 basally, the third double its basal breadth at its apex ; nervellus 

 not intercepted. 



Length 10-17 millim. 



UNITED PKOYIXCES : Dehra Dun and Mussoori (Ind. Mus.) ; 

 ASSAM : Sadiya, Margherita and Ukhrul (Ind. Mus.) ; CEYLOX : 

 Kandy, vi.-ix. (E. E. Green, type ; 0. S. Wickivar), Hakgala, ii. 07, 

 and Maskeliya, viii. 05 (E. E. Green). 



The hind coxa? vary in colour from entirely pale stramineous to 

 *nainly black with a flavescent discal mark ; the hind tibiae are 

 sometimes entirely, but not broadly, red-banded before their sub- 

 attenuate base ; and the fourth and following segments are often 

 laterally, with the c? valvula? always entirely, rufescent. 



This fine species is most closely related to T. enecator, Bossi, 

 but it is usually much larger and black, with nitidulous and 

 flavous scutellum and orbits. 



