281 



PART III. 



TWO CEXTENARIES AND A QUARTER OF BIRDS, EITHER 

 NEWj OR HITHERTO IMPERFECTLY DESCRIBED. * 



1. Falco gracilis. 



Top of the head and wing covers cinereous ; the 

 latter marked -with black spots : tail rufous, crossed be- 

 fore the tip with a band of black : outer feather white, 

 with six black bands on the inner web : body^ beneath, 

 white, with black spots. 



Inhabits Brazil : shot in the province of Bahia. 



Differs from Falco sparverius in having six distinct black 

 bands on the outer tail feather, instead of only one, besides 

 the terminal band ; there is also no rufous on the crown. 



2. Falco cinnamominus. 



Head and wing covers cinereous ; the latter with black 

 spots : all the tail feathers entirely rufous, with one 

 black band before the tip : bands on the scapulars, and 

 spots on the body beneath, black. 



Inhabits Chili. Mr. W. J. Hooker's collection. 



Size of Falco sparverius : differs in having no rufous on the 

 crown ; in the tips of the tail being rufous instead of white ; 

 and in having no second band on the outer tail feather, which 

 is rufous instead of white. It seems intermediate between 

 sparverius and gracilis, riiore resembling the first in the 

 strength and size of the black spots and bands on the upper 

 plumage, and those on the wing covers. 



3. Falco isabellinus. 

 Male. — Top of the head and wing covers cinereous, 

 without spots : tail rufous, with a black bar before the 

 tip ; external web of the outer feather pure white : 

 breast, and body beneath, Isabella, unspotted. 



* As this part is referred to in the Second Volume of the Classification 

 of Birds, under the designation of Part V. of that volume, it is recom- 

 mended to le bound up with it. 



