174 thomas say foundation 



Group F. 



Four postsiitural dorsocentrals or only the hind 

 ones developed; hind tibise in male villous; at least 

 second segment of hypopygium red. 



Table of Species. — Males. 



1. First vein hairy 2. 

 First vein bare 3. 



2. Glaucous or bluish species, the frontals not di- 



verging much below; two stpl (Mexico) 



No. 80. villipcs V. d. W. 

 Gray species, the frontals diverging below; 



three stpl, all stout ( Lower Cal. ) 



No. 81. cabensis n. sp. 



3. Legs red or yellow {tarsi may be black) 4. 

 Legs black 6. 

 Knees broadly and the middle and hind tibise 



red; palpi yellow; no ant acr; frontals very 

 small; middle tibiae villous (Cuba) 



No. 82. pedata n. sp. 



4. Middle tibia? with dense villosity on apical half; 



forceps large, tapering and strongly curved 

 forward near tip (W. I., Fla., La.) 



No. 83. fulvipes Macq. 

 Middle tibicT not villous 5. 



5. Forceps with a lateral erect smooth arm near 



the base of the free part (Ga.) 



No. 84. singularis n. sp. 

 Forceps not with lateral arm (Ga.) 



No. 85. deccptwa n. sp. 



6. Large tropical species with yellow beard; penis 



with enormously developed long stalk 

 curved almost in a semicircle and bearing at 

 end a large divided disk (Central and South 

 America) No. 86. cotylcdonea n. sjj. 



Not as described 7. 



7. First segment of hypopygium black, at least on 



apical half 8. 



First segment yellow, at least on apical half 17. 



