% 



REVISION OF THE GENUS EXETASTES — CUSHMAN 255 



more, joints; ovipositor sheatli much more than half as long 

 as first tergite (black, female witli pale antennal annulus and 

 red hind femur, male without annulus, but with front and 



middle legs also largelj^ red) 47. bituminosus, new species 



Eyes more or less convergent, distinctly longer than width of 

 face; head in front view usually constricted below eyes, 

 extended angle of cheeks narrowly acute; clypeus large, 

 convex at base but without a distinct ridge; antenna in both 

 sexes with not more than 65 joints; sheath not or barely half 

 as long as first tergite 48 



48. Clypeus separated lateralh^ by distinct groove between fovea 



and base of mandible; mandible strongly narrowed toward 

 apex, much less than twice as long as broad at base; occiput 

 httle broader than vertex, temples very strongly receding and 



nearly flat 49 



Clypeus not distinctly separated laterally; mandible weakly 

 narrowed toward apex, nearly or quite twice as long as broad 

 at base; occiput distinctly broader than vertex, temples more 

 strongly convex and less strongly receding 50 



49. Abdomen ferruginous 48. dichrous, new species 



Abdomen black 49. corvinus, new species 



50. Wings bright yellowish with apices dusky .50. fiavipennis Cresson 



Wings uniformly infumate or subinfumate 51 



51. Hind leg black orpiceous, at most with tarsus reddish apically 52 



Hind leg distinctly more or less red or yellow; if femur 



black, the tarsus pale yellow 54 



52. Diameter of lateral ocellus not or barely more than half as long 



as postocellar line; temples weakly convex; punctation of 



thorax moderately coarse and only moderately dense 53 



Diameter of lateral ocellus much more than half as long as 

 postocellar line; temples strongly convex; punctation of 

 thorax, especially of mesoscutum, finer and very dense. 



53. persimilis, new species 



53. Malar space two-thirds basal width of mandible; diameter of 



lateral ocellus fully half as long as postocellar line; antenna 

 in female about 60-jointed, blackish throughout. 



51. anthracinus, new species 

 Malar space three-fourths basal width of mandible; diameter of 

 lateral ocellus less than half as long as postocellar line; an- 

 tenna in female about 55-jointed, apical half reddish. 



52. geminus, new species 



54. Hind tibia pale yellow; front and middle femora more or less 



black 54. suaveolens Walsh 



Hind tibia black; front and middle femora yellowish ferrugi- 

 nous 55. nervulus (Say) 



1. EXETASTES CARINATIFRONS, new species 



Plate 16, Figure 1; Plate 17, Figures 23, 34; Plate 18, Figures 53, 64; 

 Plate 19, Figure 78; Plate 21, Figure 111 



Tills and the next two species form a group distinct from the rest 

 of the species In the medially carlnate frons, very short second dls- 

 coidal cell, and small areolet, and from most of the others in the 



