250 U.S. NATIONAL MUSEUM BULLETIN 2 77 



Thorax dorsum black, granular, transversely striated; humeral 

 and supra-alar calli orange-brown; pleural areas red-brown. Wing 

 clear, veins brown; halter stem brown, knob with base and dorsal 

 rib red-brown, remainder creamy white. Front leg orange; middle 

 leg orange-brown, except last segment of tarsus brown; hind leg, 

 coxa yellow, femur and tibia red-brown, tarsus yellow grading into 

 brown distally. 



Abdomen black, rugose, with purplish metallic glints; eighth 

 segment red-brown, sternum with three points; see figure for details. 



Male. — Unknown. 



Length: Female body 5.5 mm., wing 3.3 mm. 



Type-locality: Rustlers Park, Chiricahua Mts., Arizona; 8400 ft.; 

 11 June 1956 (H. and A. Howden). 



Holotype: Female (CNC) 8634. 



168. Pseudatrichia jamesi, new species 



Figure 162 



Female. — Head deep red-brown; postocular flange narrow; frons 

 narrower than ocellar tubercle, transversely striated, a slight protu- 

 berance above antennae; ocellar triangle red-broAvn, distinct, cut off, 

 ocelli clear. Mouthparts well developed, red-brown; palpi brown, half 

 the length of the oral opening. Antennae with first segment red-brown, 

 second and third segments orange, third darker at tip, tip truncated. 



Thorax dorsum dark red-brown; humeral and supra-alar calli red- 

 brown; pleural areas red-brown. Wings clear, with brown micro trichia, 

 veins brown; halter stem brown, knob with base and dorsal rib red- 

 brown, remainder white. Front leg, coxa tan, remainder of leg orange- 

 brown, middle and hind legs with coxae tan, remainder red-brown. 



Abdomen red-brown, granular, except segments six and seven 

 shining, eighth segment red-brown, sternum deeply notched and 3- 

 pronged; see figure for details. 



Male. — Unknown. 



Length: Female body 6.6 mm., wing 3.6 mm. 



Type-locahty: Evergreen, Colorado; 21 July 1942 (M. T. James). 



Holotype: Female (USNM) 67460. 



169. Pseudatrichia leechi, new species 



Figure 163 



Female. — Head black; eyes black-brown; postocular flange broad; 

 transversely striated; frons wider than ocellar triangle with a band of 

 striae passing from the anterior frontal area above antennae next to 

 the eye to the lateral edges of the median ocellus in a "V" shape, 

 remainder shining; ocellar triangle low, cut off, ocelli clear. Mouth- 



