NO. 1206. ICHNEUMON FLIES— ASHMEAD. 135 



12. Recurrent nervure interstitial or received by the second cul)!!;!! ci'll 14 



Recurrent nervure received by the first cubital cell. 



Mesonotal furrows much abbreviated or entirely absent 13 



Mesonotal furrows complete. Second discoidal cell open. 



(1037) Ilolconoius Forster. 



13. Stigma broad; transverse median nervure in hind wings, u-HJt a trace of a recur- 



rent nervure ( 1038) Apodes)iria Forster. 



Stigma narrow; transverse median nervure in hind wings vlthout a trace of a 

 recurrent nervure (10.39) Alloli/jni.s Forster. 



1 4. Second abdoni inal segment nritlioul a transverse impressed line 15 



Second abdominal segment tvith a transverse impressed line, the second and 



third segments subequal. 

 Stigma lanceolate; second cubital cell sessile... (1040) Phxdrotoma Forster. 



15. Face without long hairs, at the most sparsely pul)e8cent 16 



Face densely clothed with long hairs; stigma lanceolate; second cubital cell 



subpetiolate ( 1041 ) Eairichojm^ Forster. 



16. Radius not originating beyond the middle of the stigma 17 



Radius originating beyond the middle of the stigma. .(1042) Thcrohohis Forster. 



17. Mandibles not emarginate on the underside 19 



Mandibles emarginate on the underside. 



Mouth completely closed 18 



Mouth more or less open. 



First joint of the flagellum longer than the second; second cubital cell 

 subsessile, the marginal cell extending to the tip of the wing. 



(1043) Hypocynodus Forster. 



18. Marginal cell long, closed at or near the tip of the wing; stigma lanceolate, the 



radius originating before the middle, the second abscissa of the 

 radius about twice as long as the first transverse cubitus. 



(1044) Ilypolabis Forster. 

 Marginal cell short, closed much before the tip of the wing. 



(1045) Cryplonastes Forster. 



19. Second abscissa of the radius much shorter than the third 20 



Second abscissa of the radius as long as the third. 



Stigma narrowed or linear, the radius originating from its basal third or 

 before the middle, the first abscissa short but distinct; second dis- 

 coidal cell closed (1046) Biophthora Forster. 



20. Mouth more or less open; submedian cell most frequently hmger than the 



median, rarely equal 21 



Mouth closed; submedian and median cells equal or nearly; stigma lanceolate; 

 second discoidal cell closed ( 1047) Desmiostoma Forster. 



21 . Second discoidal cell open 22 



Second discoidal cell closed. 



Stigma large, subtriangular; cubitus originating from or a little beyond the 

 middle of the l)asal nervure; first abscissa of the radius distinct, ?io^. 

 short, the second cubital cell therefore distinctly petiolate. 



(1048) Utdes Forster. 



Stigma lanceolate, rarely subtriangular; cubitus originating near the apex 

 of the basal nervure, or near the parastigma, the first abscissa not 

 or scarcely developed, the second cubital cell therefore sessile or 

 subsessile (1049) Optus Wesmael. 



22. Stigma narrowed, linear ( 1050) Nusopoca Forster. 



