2 
Genus Pandion, Sav. 
* Pan. Haliaeetus. Britain, (Y) 
Pan. (Icthyaetus, Horsf.) Horsfeldii. Java . 
Genus Harpyia,(2) Cuv. 
Har. destructor. So. America. 
Genus Gypogeranus, III. 
* Gyp. serpentarius. So. Africa. 
Genus Circaetus, Vieill. 
Cir. cinereus. 
Subfam. CYMINDID^E. 
Genus Ibycter, Vieill. 
Ib. ater. America. 
Genus Polyborus, Vieill. 
Poly. Brazil iensis. South America. 
Genus Cymindis, Cuv. 
Cy. cuculoides. America. 
Genus Nauclerus, Vigors. 
* Nau. furcatus. America. 
Nau. (Elanus, Sav.) melanopterus. Africa. 
Nau. (Gampsonyx(3), Vig.) Swainsonii. America. 
Subfam. BUTEONINiE. 
Genus Mil v us, Auct. 
* Mil. regalis. Britain. 
Genus Pernis, Cuv. 
* Per. apivorus. Britain. 
Genus Spizaetus, Vieill. 
Spi. cristatellus. India , Sfc. 
II alloc tlus comprehends a different group — to which the name of Ha- 
liaslur is now given. 
(1) As a subgeneric group, that of which the F. Icthyaetus of Ilors. is 
a type, here takes its station. 
(2) Itis probable that thegenus HccmalornisoC Gould, will enter among 
the Harpies, or form a subgeneric group of that genus. 
(3) The genus Nauclerus of Vigors, appears to contain three distinct 
groups, or subgenera, viz., Nauclerus, Elanus, and Gampsonyx, 
