Vicinity of Mason Creek, Illinois. 



361 



an ovipositor. The cerci are short. The ninth segment of the 

 male is of the same size as the preceding. All the segments 

 are laterally produced into blunt lobes. Pronotum compara- 

 tively smaller in the male than in the female. Coxae of the 

 posterior legs large, the femora robust and short. Ovipositor 

 extending but little beyond the end of the abdomen. 



Anterior wing of the $ 23 mm long, of the $ 24-25 mm . 



Besides these three individuals, the collection contains 

 another female which does not have the wings lying over the 

 abdomen as is usually the case, but they are spread laterally, 

 therefore permitting of a more exact determination of the 

 veins. Unfortunately in this individual only the basal half 

 of the wings is preserved. This specimen is somewhat smaller 

 than usual, having a wing length of scarcely 22 mm . As far as 

 I can see, the cubitus is cleft in one of the wings into bat 4 



Fig. 40. 



Fig. 41. 



Fig. 40. JEuccenus minor 

 (left wing). $ x 2-5. 



Fig. 41. Euccenus minor (negative of 

 right wing). ? x2 - 5. 



Fig. 42. 



Fig. 42. Euccenus mazonus. x 2"5. 



