SYNOPSIS. iii. 



F. palumbarius, Linn. - - v. i, p. 31 



F. Nisus, Linn. v. i. p. 34 



Division 4. Nostrils oblique, oval: tarsi short, feathered 

 a little below the heel: bill rather slender, bending slightly 

 from the base: wings very long; first quill shorter than the 

 sixth, second a little shorter than the fifth, the third almost 

 equal in length to the fourth. 



F. Milvus, Linn. v. i, p. 36 



Division J. Bill much curved from its base, the point very 

 much bent: wings long; second quill longest : tail forked. 

 F. furcatus, Linn. 



Division 6. Bill bending from the base ; nostrils oval : 

 tarsi short, partly naked, or clothed with feathers : wings 

 long ; first quill short, the second and third shorter than the 

 fourth, which is longest. 



F. Buteo, Linn. v. i. p. 38 



F. Lagopus, Linn. v. i. p. 40 



F. apivorus, Linn. v. i. p. 42 



Division J. Tarsi long and slender, naked: wings long; 

 the first quill very short, not so long as the fifth, the third 

 or fourth longest : face surrounded with a ruff of small 

 feathers. 



F. rufus, Linn. v. i. p. 44 



F. cyaneus, Mont. - v. i. p. 46-48 



F. cineraceus, Mont. - v. i, p. 49 



Gen. 4. STRIX. -Bill compressed at the point, bending 

 from the base : nostrils lateral, pierced in the cere, oval or 

 rounded ; covered wholly or in part with hairs directed for- 

 wards: eyes very large, surrounded with radiating feathers : 

 feet thickly covered with feathers often to the claws ; three 

 toes before and one behind, entirely divided; outer toe re- 

 versible : the external edges of the outer quills generally 

 fringed; first quill shortest, the second not quite so long as 

 the third, which is generally longest. 



Division i. Without tufts on the head. 



