TABLE OF CONTEXTS. 



Page 

 Genera. 



THALASSVErUS 58 



Haliaettjs 58 



polioaetus co 



Subfamily 11. 



BUTEONIN^ 60 



Genera. 



Archibuteo GO 



Buteg , 62 



Antenor 70 



Onychotes 71 



Buteola 71 



e.upornis 72 



Butastur 73 



Asturina 74 



Geranoaettjs 74 



Letjcopternis 75 



Urubitinga 76 



Harpthaliaetxjs .... 77 



Heterospizias 78 



buteogallus 78 



Busarellus 78 



Subfamily 12. 



MILVIX.E 7i) 



Genera. 



1. Haliastijr 79 



2. MiLVTJS 80 



1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 

 15. 



Subgenus A. 



LOPHOICTINIA . 



81 



3. Gtpoictinia 82 



4. Elanotdes 82 



5. Nattclerus 83 



6. Gampsontx 83 



7. Elanus 83 



8. Ictinia 84 



Page 



9. lioSTRHAMUS So 



lt». MACH.ERAMPHUS .... 85 



11. Pernis 86 



12. Henicoperxis 87 



13. liEGERHrNUS 88 



14. Leptodon 88 



15. Baza 89 



Subfamily 13. 



FALCONIX.E 91 



Genera. 



1. Harpagtjs 91 



2. Microhierax 92 



3. poliohiera-x 93 



4. Spiziapteryx 94 



5. DiSSODECTES 94 



6. Harpa 95 



7. HiEBACTDEA 96 



8. TiNNUNCULUS 96 



Subgenus A. 



Erythropus 100 



9. Hypotriorchis 101 



10. ^SALON 104 



11. Chicqttera 105 



12. Falco 105 



Subgenus A. 



Gennaia 109 



Subgenus B. 



HiEROFALCO Ill 



Family 5. 

 PANDIONID^ 



Genus. 



112 



1. Pandion 112 



