2 [June, 



the different genera into wliicli the numerous species of this Sub- 

 Family may be grouped. More extended experience has caused me to 

 somewhat modify my views, and to introduce some new genera ; there- 

 fore, before enumerating the species contained in each genus, I shall 

 briefly give the characters by which such genus may be distinguished 

 from the others ; and at the end of the list of species in each genus, 

 I shall make a few remarks on sucli species as possess points of interest 

 or obscurity, and lastly describe any new species. 



1. POLIETES, Rond. 



Macrosoma, R. Desv. 

 Aricia, pt., Auctt. 

 Gen. ch. — Eyes hairy, contiguous in males ; arista plumose ; 

 margins of facial groove ciliated from the vibrissse to the base of the 

 third joint of the antennae ; alulets large, the lower scale twice as long 

 as the upper ; abdomen short and rounded ; bristles on the back of 

 thorax and abdomen small and soft ; anal vein terminating a short 

 distance from the margin of the wing. 



1. LABDAEIA, Fab. 2. ALBO-LINEATA, Fall. 



ftornlis ?, Desv. 



2. HYETODESIA. 



Yetodesia, Rond. 

 Aricia, pt., Auctt, 



Oen. ch. — Eyes hairy, contiguous or approximate in the males ; 

 arista plumose or sub-plumose ; facial groove bare, or nearly so ; 

 alulets generally large, but variable in size, the lower scale however 

 always longer than the upper ; abdomen oval or oblong ; anal vein 

 prolonged, but not reaching the margin of the wing. 

 Sect. 1 — Legs entirely hlacTc. 



1. INC ANA, Wdm. 

 ^ 2. LTJCOETJM, Fall. 

 X 3. MAEMOEATA, Zett. 



- 4. SEEVA, Meig. 



5. DISPAE, Fall. 



nivalis, Zett. 



6. DUBiA, sp. n. 



Sect. 2 — Legs partly pale (fulvous or rufous). 



19. BASALIS, Zett. 



7. OBSCUEATA, Meig. 



8. VAEIABILIS, Fall. 



9. LONGIPES, Zett. 

 atra. Fall. 



\ 10. TJMBEATICA, Meig. 

 11. SEMICINEEEA, Meig. 



12. L^TA, Fall. 



13. PEEDITA, Meig. 



trimacula ?, Bouche. 

 X 14. EEEANS, Meig. 



15. SIGNATA, Meig. 



16. LASIOPHTHALMA, Macq. 

 ^ 17, VAGANS, Fall. 



18. EKKATICA, Fall. 



20. EUEiPALPis, Macq. 



21. ABDOMINALIS, Zett. 



22. SIMPLEX, Wdm. 



posticata, Meig. & Zett. 



23. SCUTELLAEIS, Fall. 



populi, Meig. 

 variegata, Meig. 



24. PALLIDA, Fab. 



