THE CANADIAN ENTOMOLOGIST. 327 



2 1. Mandibles tridentate 22. 



Mandibles bidentate. 



Submedian cell longer than the median; disc of clypeus subconvex; 

 first joint of the flagellum a little shorter than the second ; 



second ventral segment normal. (Europe.) Ronisia, Costa. 



(Type Mutilla brutia, Pet.) 



22. Second ventral segment carinate, and sometimes dentate posteriorly 



(Africa.) Barymutilla, Andre. 



(Type Mutilla pythia, Smith.) 



23. Submedian cell longer than the median, the third cubital cell 



pentagonal. (Africa.) (?) Dolichomutilla, Ashmead. 



24. Scutellum and metathorax normal, unarmed 25. 



Scutellum and metathorax abnormal, armed with teeth 27. 



25. Thorax with the front margin slightly arcuate, the angles not acute ; 



front wings with t7V0 recurrent nervures 26, 



Thorax with the frontal margin slightly concave, the angles acute; 

 front wings with one recurrent nervure. 



Head transverse, not as wide as the thorax ; mesonotum with 

 distinct furrows : median and submedian cells of an equal 

 length ; abdomen with a white band. 



(Asia.) Radoszkowskius, Ashm., gen. nov. 



(Type Mutilla simplicifascia, Radoszk.) 



26. Head subquadrate, with two tubercles between the antennae, the 



temples broad; recurrent nervures converging and entering the 

 second cubital cell close together. 



(Africa.) Blakeius, Ashm., gen. nov. 



(Type Mutilla bituberculata, Smith.) 



Head transverse, ivithout tubercles between the antennte, the temples 



not broad ; recurrent nervures not converging, widely separated. 



(Africa.) Mimecomutilla, Ashm., gen. nov. 



(Type Mutilla purpurata, Smith.) 



27. Scutellum transverse-quadrate, tridentate posteriorly; second ventral 



segment armed with a tooth. (Africa.) . Peringueya, Ashm., gen. nov. 



(Type Mutilla erynnis, Pering. 

 Scutellum large, flat, bidentate posteriorly, a tooth at each hind angle 

 that curves inwardly ; second ventral segment normal, unarmed 



(Africa.) Odontomutilla, Ashmead. 



(Type Mutilla Saussurei, Sechel.) 



