118 U. S. NATIONAL MUSEUM BULLETIN 216 



propodeum rather sparse; areolet usually present; nervellus sub- 

 vertical, broken near its lower 0.35 (nervellus strongly antefurcal and 

 broken near its lower 0.2 in all the other Neartic species) ; hind spur 

 of hind tibia (including its hairs) about 4.4 as long as wide; second 

 segment of hind tarsus about 2.25 as long as wide; first tergite about 

 1.15 as long as wide, its dorsal carinae extending only about 0.34 its 

 length; last segment of hind tarsus with a small, ventral, subapical 

 tuft of hairs on inner side, surmounting a small tooth or flange; notch 

 in apex of subgenital plate weak, about 0.12 as deep as wide. 



Black. Antenna dark brown, paler beneath, especially basally; 

 apical half of mandible largely ferruginous; palpi pale brown; tegula 

 pale yellow; legs fulvous, the coxae ranging from fulvous to dark brown 

 with paler apices. 



Type: 9, Parker Creek, Sierra Ancha, Ariz., May 7, 1947, H. and 

 M. Townes (Washington, USNM 63629). 



Paratypes: 29, Oak Creek Canyon, Ariz., May 20, 1947, H. and M. 

 Townes (Townes). 29, Workman Creek, Sierra Ancha, Ariz., May 

 3 and 8, 1947, H. and M. Townes (Townes). 9, Bradley, Calif., 

 Apr. 15, 1952, W. H. Lange (Davis). 9, Idyllwild, San Jacinto Mts., 

 Calif., May 26, 1939, E. S. Ross (Townes). 9, Ross, Calif., Apr. 25, 

 1952, H. L. Mathis (Davis). 



6. Triclistus evexus, new species 



Figure 187,f 



Front wing 5.0 to 6.7 mm. long; face moderately mat, its punctures 

 coarse, separated by about 0.3 their diameter; temple weakly convex, 

 its hairs dense and evenly spaced; metapleurum with 8 to 20 hairs in 

 male, with to 5 hairs in female; median longitudinal carinae of 

 propodeum very broad and blunt; areola rather wide, very broadly 

 confluent basally with basal area; cos tula represented by a stub on 

 lateral longitudinal carina or complete, when complete weak; second 

 lateral area of propodeum, when defined, 1.7 as long on its outer side 

 as on its inner side ; hairs on area of second lateral area rather sparse ; 

 areolet usually present; hind spur of hind tibia (including its hairs) 

 about 4.0 as long as wide; second segment of hind tarsus about 2.1 

 as long as wide in male, about 1.5 as long as wide in female; first 

 tergite about 1.18 as long as wide, its dorsal carinae extending about 

 0.40 its length; last segment of hind tarsus in female with a small, 

 ventral, subapical tuft of hairs on inner side, surmounting a small 

 tooth or flange; apex of female subgenital plate parabolically rounded 

 or somewhat truncate, not distinctly notched. 



Black. Antenna brown, paler beneath, especially basally; mandible 

 ferruginous, fuscous basally; palpi stramineous; tegula pale yellow; 

 legs fulvous. 



