318 ON THE CLASSIFICATION OF BIRDS. 
of the milvine circle, equally connected on one side to 
Milvus, and on the other to Elanus. 
(253.) Collecting aU we have now said upon the 
FALCONiDa: into a narrow compass, we have inserted, 
in the following diagram, the supposed situation of nil 
the subgenera, whose characters have been more par- 
ticularly dwelt upon in the foregoing pages. 
FALCONIDai — The Falcons. 
(254.) It is somewhat remarkable that of all the five 
types which are in every complete circle, that which re- 
presents the Tenuirostres should he the most defective, 
or rather the least known, in the family before us. It 
