236 THOMAS SAY FOUNDATION 



present; genital segment red, with slitlike aperture 

 gu{ rded by moderate bristles ; middle femur without 

 comb; middle tibia with three bristles on outer front 

 side. 



Length of male 15 mm; of female 9 mm. 



One pair on same pin, taken by Prof. S, J. Hun- 

 ter on Beaver Creek, Mont., altitude 6800 feet, Au- 

 gust 1913. In University of Kansas collection. 



Holotype — Male, in University of Kansas. 



Group G. 

 Four ps dc, of which the foremost one or two 

 may be small; hind tibiae without villosity in male; 

 both segments of hypopygium black (but this last is 

 not constant in rilyei, jonesi and celarata). 



Table of Species — Males. 



1. First vein hairy (widespread) 



No. 112. salva n. sp. 

 First vein bare 2 



2. Middle femur with well-developed comb below 3 

 Middle femur not with comb 5 



3. Penis with a large concavity on the front side, in 



which no copulatory tube is visible (S. C) 



No. 113. rileyi n. sp. 

 Penis with very distinct copulatory tube project- 

 ing forward from the front side near tip 4 



4. Accessory plate long but flat, not diverging later- 



ally (S. C, Ga.) No. 114. jonesi n. sp. 



Accessory plate very long, the distal part round, 



slender, brown, strongly diverging laterally 



(when viewed from behind especially) (Ala.) 



No. 115. celarata n. sp. 



5. Bucca with abundant pale beard before the meta- 



cephalic suture ( Ind. ) No. 116. servilis n. s-p. 

 Bucca not with pale beard before the suture 6 



6. Parafrontals and parafacials gray; facialia 



(facial ridges) hairy much less than halfway 

 (Guatemala) 



No. 14. Notochceta suhpolita n. sp. 



