THE CANADIAN ENTOMOLOGIST. 305 



Eyes not large, hemispherical or rounded 4. 



2. Postscutellum armed on each side with a small erect tooth or spine ; 



mesonotum with complete furrows 3. 



Postscutellum normal, unarmed. 



Front wings with three cubital cells, the third sometimes incom- 

 plete, the stigma very small and indistinct ; only one recurrent 

 nervure; mandibles strongly excised beneath, 3-dentate at 

 apex ; middle and hind tibise armed with spines. 



(Africa ) Tricholabiodes, Radoszkowski. 



(Type Mutilla pedunculata, Klug.) 



3. Front wings with two cubital cells and only one recurrent nervure ; 



both mandibles excised beneath, with a process or projection 

 before the incision ; ocelli large. (Africa, 



Asia.) Pseudophotopsis, Andre'. 



(Type Agama Kamarovi, Radosz ) 

 Front wings with fAree cuhhal cells and with two recurrent nervures, 

 the third cubital cell again divided by a longitudinal vein issuing 

 from the middle of the second transverse cubitus. 



(Asia ) Alloneurion, Ashmead. 



(Type Mutilla Kokpetica, Radosz.) 



4. Mesosternum anteriorly normal, unarmed 5. 



Mesosternum anteriorly abnormal, armed with two (or more) teeth. 



Head quadrate, the temples full ; mandibles at apex 4-dentate ; 

 mesosternum laterally at the middle armed with a tooth ; first 

 joint of the flagellum as long or nearly as the second. (North 



America.) Tetraphotopsis, Ashm., gen. nov. 



(Type T. Hubbardi, Ashm.) 



Head not quadrate, the temples not full ; mandibles at apex 

 3-dentate ; mesosternum laterally unarmed ; first joint of the 

 flagellum shorter than the second. (North 



America.) Odontophotopsis, V^iereck. 



(Type O. exogyrus, Viereck.) 



5. Marginal cell at apex pointed or rounded, but never broadly 



truncate 6. 



Marginal cell at apex broadly, squarely truncate 15. 



6. Mandibles beneath excised, or with a sinus and usually with a tooth, 



or process, before the incision, or at least the left mandible excised 

 beneath , , 7. 



