588 



PATAGONIAN EXPEDITIONS: ZOOLOGY. 



O. V. Aplin (Ibis, 1894, p. 196) says of this species in Uruguay: 

 11 At Sta. Elena less "common than the Carancho at all seasons, but 

 more abundant in autumn than in spring and summer. At the Rio 

 Negro they were more common. Some were remarkably tame ; a pair at 

 Sta. Florencia might be seen any morning on the quinta fence, and I saw 

 a pair sitting on the posts of the corral at a puesto on Sta. Elena, quite 

 indifferent to the barking of several dogs which came out at us." 



M. J. Nicoll found it fairly abundant in Molineux Sound, where it fre- 

 quented the water's edge. (Ibis, Jan. 1904, pp. 44-45.) 



Subfamily ACCIPITRIN^E. 



Sharpe, Cat. Bds. Brit. Mus. i. p. 46 (1874); Sharpe, Hand-list Bds. i. 

 p. 244 (1899). 



FIG. 293. 



Head of Circus hudsonius ; showing the facial ruff. The feathers are laid back to expose the 

 external ear. Life size. Drawn from a bird just killed. 



Genus CIRCUS Lacepede. 



Type. 



Circus, Lacp. Tableaux, Ois., 1799, p. 4; Sharpe, Cat. 

 Bds. Brit. Mus. i. p. 50 (1874); Sharpe, Hand-list 

 Bds. i. p. 245 (1899) C. ceruginosus. 



Pygargus, Koch, Syst. Baier. Zool. p. 127 (1816) . -> . C. cyaneus. 



