MyCETOPlIlLTNyi:. 81 



9. The 4tli vein forks (after quitting tlie 

 anterior cross-vein) at not before one- 

 fourth of its length * . • . 10. 



The 4th vein forks almost immediately 

 after quitting cross-vein Delopsis, Skuse (gt.), 



10. Petiole of 4th vein equal in length to Lp. 118. 



the branches Anomalomyia, Hutton, 



Petiole of 4th vein one-fourth the length [p. 90. 



of the branches 11. 



11. The 3rd vein begins at or before middle 



of 1st longitudinal vein Pal^oanaclinia, Meun., 



The 3rd vein begins near tip of 1st [p. 85. 



longitudinal Greenomyia, gen. no v., 



12. Costal vein ending beyond tip of 3rd [p. 87. 



lougitudinal (if but slightly, then 

 auxiliary vein long, and ending in 1st 



longitudinal) 13. 



Costal vein not extending beyond tip 

 of 3rd longitudinal vein 15. 



13. Lateral ocelli not adjacent to eye 



margins Macrobrachius, Dzied., 



Lateral ocelli contiguous or sub-con- [p. 108. 



tiguous to eye margins 14. 



14. Costal vein e.xtending but little beyond 



tip of 3rd longitudinal vein ; 6th vein 



.short Phronia, Winn, (pt.). 



Costal vein extending some little [p. 110. 



distance beyond tip of 3rd longitudinal 



vein ; 6th vein nearly reaching fork of 



5th vein Macrobrachius, Dzied. 



15. Three distinct ocelli, the lateral ones [(?*•)- P- 108. 



widely removed from eye margins ; 

 base of 3rd longitudinal vein beyond 

 middle of wing ; anterior branch of 4th 



longitudinal vein detached at base . . Clastobasis, Skuse, p. 94. 

 Lateral ocelli nearlj^ or quite contiguous 

 to eye margins 16. 



16. Setae of hind tibife slender, little, if any, 



longer than the diameter of the tibipe . 17. 

 Setae of hind tibiae distinctly stouter, 

 at least twice as long as diameter of 

 tibife 20. 



17. The 5th longitudinal A^ein forks before 



fork of 4th vein 18. 



The 5tli longitudinal vein forks bevond 

 fork of 4th vein \... 19. 



18. The 6th vein very stout, ending usually 



a little beyond the fork of the 5th vein ; 

 5th vein forking very narrowly at base, 

 the lower branch beyond the middle, 

 suddenly diverging downwards ; the 

 fork before the proximal end of anterior 



cross-vein liHYMosiA, Winn., p. 102. 



The 6th vein slender and inconspicuous. Allodia, Winn., p. 107. 



* Except in some species of 



