188 CHECK-LIST OF NORTH AMERICAN BIRDS. 



337 a. Buteo borealis kriderii HOOPES. 



Krider's Hawk. 



Buteo borealis var. kridtrii HOOPES, Pr. Ac. Nat. Sci. Phila. 1873, 

 238, pi. 5. 



[B , Casir, R 4 36a, C 519.] 

 HAB. Plains of the United States, from Minnesota to Texas. 



337 . Buteo borealis cahirus (CASS.). 



Western Red-tail. 



Buteo calurus CASS. Pr. Ac. Nat. Sci. Phila. VII. 1855, 2Sl - 

 Buteo borealis var. calurus RIDGW. Bull. Essex Inst. V. Nov. 1873, 

 186. 



[620, 24, C35I0, R 436 , C 517.] 



HAB. Western North America, from the Rocky Mountains to the 

 Pacific, south into Mexico casual east to Illinois. 



337 c. Buteo borealis lucasaxms RIDGW. 



Saint Lucas Red-tail. 



Buteo borealis var. lucasanus RIDGW. in COUES'S Key, 1872, 216 

 (under B. borealis}. 



[B , C 351 , R 436', C 518.] 

 HAB. Peninsula of Lower California. 



338. Buteo harlani (AUD.). 



Harlan's Hawk. 



Falco harlani AUD. B. Am. I. 1830, 441, pi. 86. 

 Buteo harlani BONAP. Geog. & Comp. List, 1838, 3. 



[B22, C 35 o, R 43 8, C 5 i 5 .] 



HAB. Kansas, Louisiana, and Texas, south to Central America. 

 Casual in Southern Illinois and Pennsylvania. 



339. Buteo lineatus (GMEL.). 



Red-shouldered Hawk. 



Falco lineatus GMEL. S. N. I. ii. 1788, 268. 



Buteo lineatus JARD. ed. WILS. Am. Orn. II. 1832, 290. 



