THE CANADIAN ENTOMOLOGIST. 3^1 



Head subglobose ; eyes not small, oval or ovate ; mandibles 

 stout, conically-pointed ; third antennal joint fully twice as 

 long as thick, obconicol, longer than the fourth. (Europe, 



Africa.) Dasylabroides, Andre. 



(Type Mutilla caffree, Smith.) 



44. Thorax more or less contracted at the sides, almost violin-shaped or 



obtrapezoidal ; if somewhat quadangular the sides sinuated . . . .45. 

 Thorax quadangular or nearly, trapezoidal or obpyriform 46. 



45. Thorax, seen from above, almost violin-shaped. 



Head large, quadrate, wider than the thorax, the upper hind angles 

 acute, beneath armed with a tooth on each side ; mandibles 

 usually bidentate, rarely simple, the outer tooth the longer. 



(North America.) Pseudomethoca, Ashmead. 



Head transverse, usually wider than the thorax, but with the hind 

 angles rounded and beneath unarmed ; mandibles with a tooth 

 within before apex. (South 



America.) Dimorphomutilla, Ashmead, gen. nov. 



(Type Mutilla lunulata. Spin.) 



Thorax, seen from above, almost quadangular, with the sides 



bisinuate or crenulate ; head transverse, a little wider than the 



thorax, the cheeks unarmed; eyes ellipsoidal; mandibles bidentate. 



(Africa.) Barymutilla, Andre. 



(Type Mutilla pythia. Smith.) 



46. Thorax not trapezoidal 47. 



Thorax trapezoidal, slightly narrowed antei-iorly. 



No median longitudinal carina on thorax, the lateral margins finely 

 denticulate ; head large, nearly (juadrate, wider than the thorax ; 

 eyes oval ; hind tibiaj spinous ; scape long, somewhat curved ; 

 first joint of the flagellum very long, three or more times longer 

 than the second ; tarsi long and slender ; mandibles large, 

 falcate. (Africa.) Labidomilla, Andre. 



A feeble median longitudinal carina on thorax, the lateral margins 

 not acute, the hind angles acute ; head oblong, longer than 

 wide ; eyes oval ; middle and hind tibife smooth, not spinous. 



(Europe, Asia, Africa.) Nanomutilla, Andre. 



(Type Mutilla voucheri, Turn.) 



47. Thorax quadrangular or nearly, the sides parallel or nearly, rarely 



qauch compressed or sinuate at sides medially , ^8. 



