ICHNEUMON-FLIES OF AMERICA I 1. METOPIINAE 237 



35. Exochus cnemidotus, new species 



Figures 190,a; 194,g 



Front wing 4.2 to 5.6 mm. long; combined face and clypeus about 

 1.05 as high as wide in male, about 1.13 as high as wide in female, 

 their vertical convexity uniform and moderately strong, their trans- 

 verse convexity stronger than the vertical, their punctures moderately 

 coarse, separated by about 0.4 their diameter on face, much sparser 

 on clypeus; interantennal process with an apical angle of about 70 

 degrees; median swelling of frons rather weak; median half of clypeus 

 truncate or weakly concave; mandible broad basally, with sparse 

 coarse punctures, rather evenly tapered to a moderately broad apex, 

 its lower tooth very small; hind ocellus separated from eye by about 

 0.72 its long diameter in male, by about 1.0 its long diameter in 

 female; costula complete but medially weak; second lateral area of 

 propodeum with a few hairs, these variously distributed along its 

 basal and lateral edges and its lateroapical corner; hind femur about 

 2.25 as long as deep in male, about 2.07 as long as deep in female; 

 front spur of hind tibia about 2.9 as long as wide in male, about 3.1 

 as long as wide in female; punctures on second tergite of moderate 

 size, rather sharp, medially very sparse or absent, sublaterally sep- 

 arated by about 1.0 their diameter; male clasper very broad, its 

 apex obliquely subtruncate with the corners rounded. 



Figures 141, 142. — -Localities: 141 (left), Exochus cnemidotus; 142 (right), E. capnodes. 



Black. Face, narrow orbital line on lower third of frons, elongate 

 triangle at top of eye, and clypeus, whitish, a median vertical line or 

 elliptical spot on face light brown to blackish, often a brown spot 

 outside of clypeal fovea, apical edge of clypeus blackish, and edges 

 of mandible brown or blackish. In the two male specimens at hand 

 the face has across its lower part a broad brown band which extends 



