ORDER RAPTORES. 157 



Parabuteo unicinctus (TEMMINCK). 

 RANGE. Southern United States south to Argentina. 



a. [Parabuteo unicinctus unicinctus. Extralimital.j 



6. Parabuteo unicinctus harrisi (AUDUBON). Harris's Hawk. [335.] 



Buteo harrisi AUDUBON, Birds Amer. (folio), IV, 1837, pi. 392. (Between 

 Bayou Sara and Natchez, Mississippi.) 



RANGE. Lower Sonoran Zone in southeastern California, southern Ari- 

 zona, southern New Mexico, southern Texas, Louisiana, and Mississippi south 

 to Cape San Lucas and Panama ; accidental in Iowa. 



GENUS BUTEO LACEPEDE. 



Buteo LACEPEDE, Tableaux Ois., 1799, 4. Type, by tautonymy, Falco 

 buteo LINNAEUS. 



SUBGENUS BUTEO. 

 Buteo borealis (GMELIN). 



RANGE. North America from southeastern Alaska and central 

 Canada south to Guatemala. 



a. Buteoborealis borealis (GMELIN). Red-tailed Hawk. [337.] 

 Falco borealis GMELIN, Syst. Nat., I, i, 1788, 266. (Carolina.) 



RANGE. Eastern North America, from Saskatchewan, Wisconsin, and 

 Illinois east to central Keewatin and Newfoundland, and south to eastern 

 Texas, northeastern Mexico, the Gulf coast, Florida, and the Greater Antilles. 



6. Buteo borealis krideri HOOPES. Krider's Hawk. [337a.] 



Buteo borealis var. kriderii HOOPES, Proc. Acad. Nat. Sci. Phila., 1873, 

 238, pi. 5. (Winnebago Co., Iowa.) 



RANGE. Great Plains from Wyoming, North Dakota, and Minnesota 

 south to Nebraska and Missouri and in winter to Wisconsin, Illinois, Texas, 

 Louisiana, and Mississippi. 



c. Buteo borealis calurus CASSIN. Western Red-tail. [3376.] 



Buteo calurus CASSIN, Proc. Acad. Nat. Sci. Phila., VII, 1855, 281. (Near 

 Fort Webster, Rio Mimbres, New Mexico.) 



