SARCOniAGA AND ALI>IES 175 



8. Prescutellars absent; forceps nearly straight, in 



profile with a notch behind near base (very 

 widespread) 



No. 87. lucmorrhoidalis Fall. 

 Prescutellars present 9. 



9. Middle tibiae villous, no ant acr 10. 

 Middle tibiii? not villous. 15. 



10. Only one row of black hairs behind the eye; ro- 



bust tropical species w4th golden head and 

 beard, and yellow pollen on sides of thorax 

 and abdomen (W. I. and south) 



No. 88. wiedemanni n. sp. 



More than one row of black hairs behind the eye ; 



a group of slender, blackish western species, 



head gray 11. 



11. Anterior clasper short, with sharp, curved point 



and a sudden widening on outer side half- 

 way to base (Colo., N. M.) 



No. 90. elofigata n. sp. 

 Anterior clasper much longer, with rounded or 

 forked tip, and not abruptly wider on outer 

 side on basal half 12. 



12. Penis with five or six slender processes at 



apex 13. 



Penis ending in a more globose or platelike 



structure 14. 



13. Forceps bent forward on hind edge near tip with 



a rather distinct angle; front lobes of distal 

 segment of penis in the form of shining 

 blackish plates (Idaho) 



No. 89. thatuna n. sp. 



Forceps evenly curved forward in profile ; front 



lobes of distal segment of penis in the form 



of a delicate pale membrane or fringe (Ida., 



Wash.) No. 91. occidentatis n. sp. 



14. Penis with two pairs of very large longitudinal 



plates on the front side, and the apex 

 fringed with yellowish pubescence (Idaho) 

 No. 92. juliaetta n. sp. 



