1921] 



Eumenes alluaudi 



161 



parts as in E. maxillosus. Shape and structure of thorax and legs 

 also as in that species. Middle tibiae with one spur. Abdomen 

 more slender than in E. maxillosus, though of the same general 

 shape. The basal, narrow portion of the petiole is fairly parallel- 

 sided and about as long as, or but little shorter than, its apical, 

 broadened part; the spiracles are prominent, placed a little beyond 

 half the length of the petiole; the broadened, posterior portion 



Fig. 1. Eumenes alluaudi J. P4rez. a, head of male in front view; b, head 

 of female in front view; c, part of fore wing; d, antenna of male. 



is nearly parallel-sided, but it has expanded apical angles as in 

 E. maxillosus. In profile the posterior, broad portion of the petiole 

 is less swollen and slopes more gradually toward the hind margin 

 than in E. maxillosus. Second abdominal segment also more 

 slender than in that species, with simple hind margin; its sternite 

 regularly convex, but little if any flattened in the middle, never 

 saddle-shaped. Fore wing (Fig. Ic) with the third cubital cell 



