THE CANADIAN ENTOMOLOGIST. 329 



35. Thorax not twice as long as wide, the upper margin of the triincature 



armed with 3 to 5 teeth ; head large, quadrate, the temples very 



broad. (Africa.) Peringueya, Ashm., gen. nov. 



(Type Mutilla euterpe, Pe'ring.) 

 Thorax a little more than twice longer than wide, the upper margin of 

 the truncature armed with about 8 teeth ; head subquadrate, the 

 temples not especially broad. 



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



(Type Mutilla pectinata, Radoszk.) 



36. Mandibles at apex not tridentate 37. 



Mandibles at apex tridentate, the outer tooth the longest. (Europe, 



Africa, Asia.) Mutilla, Linne. 



37. Mandibles not emarginate beneath towards base, without a process 



or projection 38. 



Mandibles emarginate beneath towards base, with a process or 

 projection before the emargination. (Europe.). . . . Ronisia, Costa. 



(Type Mutilla brutia, Pet.) 



38. Head subquadrate or transverse, not or scarcely wider than the 



thorax. 



Mandibles bidentate ; third joint of the antenna not longer than 

 the fourth, shorter than the fifth, or no longer. 



(Europe.) Smicromyrme, Thomson. 



Mandibles acuminate, edentate, rarely with a slight tooth within 

 before apex; third joint of the antennas longer than the fourth, 

 usually as long as joints 4 and 5 united. (North and South 



America.) Timulla, Ashmead. 



Head large, quadrate, wider than the thorax, the temples broad ; 

 thorax more than twice longer than wide ; abdomen with two white 

 dorsal spots on second segment. (Africa.). . . Viereekia, Ashmead. 



39. Thorax not escutcheon-shaped 40. 



Thorax somewhat escutcheon-shaped, sinuately emarginated or 



contracted from about the apical one-fourth, the posterior margin 

 and angles rounded ; head transverse, as wide as the thorax ; eyes 

 oval. (Africa.) Miniecomutilla, Ashm. 



40. Thorax quite differently shaped, without a lateral tooth at the apical 



third 41- 



Thorax sinuate and slightly narrowed posteriorly from a lateral tooth 

 9,t the apical third, 



