(360 



SYSTEMA TIC SYNOPSIS. — RAPTORES — A CCIPITRES. 



white-tipped. A small $ cooperi grades in size nearly down to a large 9 velox, but there ap- 

 pears to be constantly a ditiereuce of 2 00 at least in total length; and in any event, the other 

 characters above given will suffice for their discrimination. In either species, the yellow of the 



cere and feet is often or usually obscured with greenish. In cooperi, tlie tarsal scutella are 

 sometimes indistinct, but are not known to fuse into a boot. A large 9 not distantly resembles 



