AVES FALCON I DM. 609 



Back: Deep brown, most of the feathers with narrow margins of 

 rufous, least distinct on the upper back, but conspicuous on the upper 

 tail-coverts. 



Tail : Dull ash-brown, each feather tipped with ashy white and crossed 

 by six bars, somewhat obsolete on the upper surface, but very definite 

 ami strongly contrasted on the ashy white of the under surface. 



Wings : The upper wing-coverts like the back, dull deep brown, with 

 rufous margins and edges ; the quills brown, barred with blackish brown ; 

 the secondaries tipped with whitish and with concealed white spots ; the 

 wing from beneath shows the barring very distinctly, relieved by the ashy 

 white interspaces. 



Lower parts : Throat and chin as described ; the remainder of the lower 

 surface creamy buff, with broad oval streaks, or spots, of deep brown on 

 each feather, the whole having a striped appearance ; this marking is ac- 

 centuated on the sides ; the thighs and feathered portion of the legs 

 bright rufous, barred and spotted with deep brown ; under wing-coverts 

 deep buff, barred with dark brown ; axillaries dirty whitish, with rufous 

 barring. 



There is no available record of the color of the naked parts, or eyes 

 from freshly killed birds. 



Geographical Range. Chili, ranging south to the Straits of Magellan, 

 Orange Bay, Punta Arenas and Penguin Rookery; southern Patagonia. 



This appears to be an uncommon bird of prey in the regions visited by 

 the naturalists of the Princeton Expeditions ; they did not meet with the 

 bird. There are numerous records of the hawk in the Straits region and 

 in the foothills of the Cordillera in Chili. It is a bird that preys chiefly 

 on smaller birds and rarely on mice or the larger insects. It is the proto- 

 type of Accipiter nisus in Europe and of Accipiter velox ( = A. fuscus) 

 in North America and is like these birds in its general economy and 

 habits. The breeding habits of the species are but little known and there 

 are no eggs in the collections of the British Museum. 



Subfamily BUTEONIN^E. 



Sharpe, Cat Bds. Brit Mus. i. p. 158 (1874); Sharpe, Hand-list Bds. i. p. 

 254 (1899). 



