FAtCONID^. AQUILINE. 
207 
the upper maudible hooked, and very acute, with a 
tooth, or festoon, towards the end on each side, or with 
the cutting margin sinuated. Claws considerably 
curved, retractile, and very acute. 
SuBFAM. AQUILIN.®. Eagles. 
Size large. Body strong, robust, muscular; somewhat 
heavy. Bill rather straight at the base, but curved 
towards the end. Wings more or less lengthened ; 
the three first quills graduated. Feet very strong and 
Muscular : the tarsus more or less plumed : the claws 
large, and much curved. 
I’andion, Savigny. Bill rather short, rounded above, 
curved from the cere ; the cutting margin of the 
upper mandible with a slight festoon in the middle. 
Nostrils small, obliquely transverse. Wings length- 
ened; the second quill longest. Legs naked; tarsi 
entirely covered with small reticulated scales. Toes 
unconnected; the exterior somewhat versatile. Claws 
nearly equal, rounded beneath. 
P. haliwetus.* Sav. Europe. Araerieamis. Wils. 37. 1. 
Aquila Wings lengthened (the first quill short, the 
fourth and the fifth the longest. Tern.). Tarsus plumed 
almost to the toes. Head not crested. Inhabits chiefly 
the Old World. 
t A.imperialis. Tern. Man. 37. pennatus. Tern. Man. 43. 
chrysa;tos. PI. Enl. 410. albicilla. Selby, i. pi. 3. 
nwvius. Teni. Man. 43. leucocephalus. Wils. 3G. 
Hahpyia, Cuvier. Wings 
rather short. Tarsus more 
lengthened, and generally 
naked. Head crested. In- 
habits the tropics of both 
the Old and the New World. 
* So far as 1 can jud^fc from figures and descriptions, I am disposed to 
consider the genera Dadeiion, /fu;r«fl/or«/s,and some others, to be secondary 
forms, orsubgeneric types. Not having them before me, I have not ven- 
f ured to adopt them. I wish, in fact, that this arrangement of the Falconido' 
should be looked upon as merely temixirary, being now engaged on a more 
minute investigation of the whole family, 
t These European species are inserted on the authority of the Manuel 
Ornitholosiey 2d cd. 
