294 ICHXEUMONIDjE. 



nitidulous, smooth or finely punctate ; basal segment with discal 

 carinse not extending to apex ; the next two or three segments 

 laterally margined beyond their centre, with broad epipleurae ; 

 sixth ventral of $ prominent, terebra usually concealed, hypo- 

 pygium retracted. Legs, and especially the femora, stout and not 

 elongate, with the claws stout ; intermediate tibia? with calcaria 

 of very unequal length. Wings not broad, with the nervulus 

 nearly always oblique and postfurcal, rarely interstitial ; areolet 

 wanting ; parallel nervure emitted from below centre of brachial 

 cell ; lower wings with the nervellus oblique and distinctly 

 antefurcal. 



Range. PalaBarctic and Nearctic Eegions. 



Thomson says (loc. cit. p. 198) that this genus, which originally 

 included the whole tribe, as understood by Gravenhorst, is dis- 

 tinguished from Polyclistus by its strongly unequal intermediate 

 calcaria, the pale markings on the head, the somewhat less 

 prominent face, less abruptly declivous occiput, and the less 

 constricted first abdominal segment ; I have, however, followed 

 Forster's clearer, though perhaps no more constant, definition by 

 placing herein those species with the basal metathoracic area 

 confluent with the areola, and reserving for Polyclistus those in 

 which these two area? are distinctly divided by a transverse 

 costa. 



Table of Species. 



1 (4) Nervellus geniculate before bottom ; 



thorax not broadly flavous. 

 2(3) Scutellum flavous; thorax shining and 



finely punctate xanthojnts, Cam., p. 204. 



3 (2) Scutellum black ; thorax dull and 



closely punctate parca, sp. n., p. 296. 



4 (1) Nervellus freniculate at bottom ; thorax 



broadly flavous. 



5 (6) Metathoracic arerc incomplete ; basal 



nervure subcoutinuous coronellus, sp. u., p. 290. 



6 (5) Metathoracic areae complete : basal 



nervure not continuous, 



7 (8) Vertex of head narrower ; mesonotum 



disc-ally black jlavicapttt, sp. n., p. 297. 



8 (7) Vertex of head broader ; mesonotum 



discal] y flavous flavinotwn, sp. n., p. 298. 



208. Exochus xanthopus, Cam. 



Exochus xantliojms, Cameron,* Journ, Bombay Nat. Hist. Soc. 

 1902, p. 430 (rf). 



c? . A black and shining species, profusely marked with 

 flavous. Head broadly rounded behind the internally very 

 slightly emarginate eyes ; occiput deplanate, longitudinally im- 

 pressed centrally, not abruptly declivous nor bordered below; 

 frons finely punctulate, centrally convex, and finely carinate 



