HIEEAAETUS. 
proposed in connection with a different form and I then, following Sharpe, 
used Eutolmaetus. Upon further investigation the correct name was found 
to be Hieraaetus, which is here used, as was used by Gould in his 
‘‘ Handbook.” 
In my synonymy will be noted four generic names given to Fako honelli 
Temminck, which is here considered as congeneric. Structurally this species 
agrees fairly with Falco 'pennatus Gmelin, the type of Hieraaetus, but I am 
inclined to believe that anatomical investigation wiU decide that these two 
can be differentiated. There is really no outstanding structural characters 
whereby these genera can be superficially separated, and it is no use 
dogmatising upon skins, as everything depends upon the osteology of the 
species. 
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