81 



Smaller than B. borealis borealis ; average 

 wing ^ 317 mm.; wing $ 356, tail 225 mm. ; 

 plumage above reddish brown with darker 

 centres ; lesser wing-coverts bright chest- 

 nut ; below pale brownish rufous, barred 

 with white ; thighs paler and more buffy ; 

 quills and tail black, barred with white, 

 the tail with about 6 bars. 



1 144a. Buteo lineatus elegans Cassin, Pr. Ac. Nat. 

 Sci. Philad., vii., p. 281 (1855). [Cali- 

 fornia, type in Phil. Ac. Mus.] 

 Western Red-shouldered Hawk. 



Much darker: " An erythrism of last f orm" 

 (Coues) ; below generally much darker red- 

 dish, with much less white barring ; thighs 

 rufous ; wing (J 327 mm. 



W. North 

 America from S. 

 Brit. Colombia 

 to N.W. Mexico 

 and Lower 

 CaUfornia. 



*144b. Buteo lineatus alleni Ridgw., Pr. U.S. Nat. 

 Mus. vii., p. 514 (1885). [Tampa, Fla., 

 type in U.S. Nat. Mus.] 

 Florida Red-shouldered Hawk. 



S. Carolina to 

 Florida. 



Much smaller than typical form ; wing 

 cJ 295-300, ? 310-325 mm. 



144c. Buteo lineatus extimus Bangs, Pr. New Florida Keys. 

 Engl. Zool. CI. VII., p. 35, Jan. 16, 1920. 

 [Cape Florida, type in M.C.Z. Harvard.] 

 Bangs's Red-shouldered Buzzard. 



Similar but slightly paler and smaller ; 

 wing <J 270-75, tail 167-69 ; wing 2 295- 

 305 mm. 



144d. Buteo lineatus texanus Bishop, Auk., xxix., 

 p. 232 (1912). [Texas, type in coll. L. B. 

 Bishop, Corpus Christi, Tex.] 

 Texan Red-shouldered Hawk. 



Texas, Mexico. 



