ORDER RAPTORES. 159 



Buteo abbreviates CABANIS. Zone-tailed Hawk. [340.] 



Buteo abbreviatus CABANIS, in SCHOMBURGK, Reisen Brit. Guiana, III, 

 1848, 739. (Upper Pomeroon, British Guiana.) 



RANGE. Lower Sonoran Zone in Arizona, New Mexico, and south- 

 western Texas south through Mexico and Central America to Vene- 

 zuela and British Guiana; casual in southern California. 



Buteo swainsoni BONAPARTE. Swainson's Hawk. [342.] 



Buteo swainsoni BONAPARTE, Geog. & Comp. List, 1838, 3. (Near the 

 Columbia River.) 



RANGE. North and South America. Breeds from southern Brit- 

 ish Columbia, Fort Yukon, Alaska, northwestern Mackenzie, and 

 Manitoba south to Chile; casual in Quebec, Ontario, Maine, and 

 Massachusetts; winters from South Dakota southward. 



Buteo platypterus (VIEILLOT). Broad-winged Hawk. [343.] 



Sparvius platypterus VIEILLOT, Tableaux Encycl. M<th., Ill, 1823, 1273. 

 (Schuylkill River, near Philadelphia, Pa.) 



RANGE. Eastern North America. Breeds from central Alberta, 

 southeastern Saskatchewan, northern Ontario, New Brunswick, and 

 Cape Breton Island south to the Gulf coast and central Texas, mainly 

 east of the Mississippi; winters from the Ohio and Delaware valleys 

 south to Venezuela and Peru. 



SUBGENUS TACHYTRIORCHIS KAUP. 



Tachytriorchis KAUP, Class. Saug. und Vogel, 1844, 123. Type, by 

 monotypy, Falco pterocles TEMMINCK = Buteo albicaudatus VIEILLOT. 



Buteo albicaud&tus VIEILLOT. 



RANGE. Texas south through Mexico, Central America, and 

 South America to Chile and Argentina. 



a. [Buteo albicaudatus albicaudatus. Extralimital.] 



b. Buteo albicaudatus sennetti ALLEN. Sennett's White-tailed Hawk. [341.] 



Buteo albicaudatus sennetti ALLEN, Bull. Am. Mus. N. H., V, July 19, 

 1893, 144. (Lower Rio Grande Valley, Texas.) 



