ICHNEUMON-FLIES OF AMERICA: 1. METOPILNAE 53 



rather long, moderately dense hairs; flagellum with about 21 seg- 

 ments; front spur of middle tibia about 0.50 as long as hind spur; 

 second segment of middle tarsus about 1.7 as long as wide; meta- 

 pleurum with a few hairs in its upper front corner, the rest bare, with 

 rather strong radiating wrinkles in its lower 0.3. 



Black. Face, clypeus, tegula, and legs light brownish fulvous, the 

 tibiae basally a little paler and the hind coxa sometimes basally 

 brownish; mandible and antenna brown; palpi stramineous. 



Type: 9, Casco, Maine, Aug. 13, 1944, J. C. Bradley (Washington, 

 USNM 63607). 



Paratypes: 9, Cabin John, Md., R. M. Fouts (Washington) 9, 

 Bemus Point, N. Y., Aug. 21, 1937, H. Townes (Townes). 



17. Trieces ciliosus, new species 



Figure 182, a 



Front wing 2.8 to 3.0 mm. long; face about 0.95 as wide as high, its 

 punctures coarse and subadjacent; face and clypeus in profile weakly 

 convex; attachment of front tentorial arm visible as a dark circle 

 around clypeal fovea with a short, linear, dorsomesal appendage; eye 

 with long, rather dense hairs; flagellum with about 25 segments; 

 front spur of middle tibia about 0.52 as long as hind spur; second 

 segment of middle tarsus 2.0 as long as wide in male, about 1.25 as 

 long as wide in female; metapleurum with a few hairs in its upper 

 front corner, elsewhere bare, with rather fine, short, radiating wrinkles 

 next to its coxal attachment. 



Black. Face, front part of cheek, clypeus, and mouth parts, pale 

 yellow; antenna blackish brown, a little paler below; front and middle 

 legs brownish fulvous, their tibiae basally pale yellow; hind coxa and 

 femur dark brown, the coxa at apex and the femur at base and apex 

 pale brown; hind trochanters pale brown; hind tibia and tarsus brown, 

 the basal 0.2 of hind tibia whitish. 



Type: 9, Hyattsville, Md., Oct. 7, 1888, T. Pergande (Washington, 

 USNM 63608). 



Paratypes: d\ Takoma Park, Md., Sept. 24, 1944, H. and M. 

 Townes (Townes). 9, Falls Church, Va., July 21, 1920, William 

 Middleton (Washington). 



III. DENTATUS GROUP 



Head of moderate width; body rather elongate; attachment of front 

 arm of tentorium visible as a long arched line extending from clypeal 

 fovea ventrolaterally and farther dorsomedially along the clypeal 

 suture; eye with short, sparse hairs; mesopleurum in its lower hind 

 corner with a weak, wedge-shaped ripple but without sharp wrinkles 

 (figs. 182, b,c); metapleurum without a vertical pit in its hind end. 



