CONTENTS IX 



Order Falconiformes: Diurnal birds of prey — Continued 

 Suborder Falcones: True birds of prey— Continued 

 Family Accipitridae — Continued 

 Subfamily Buteoninae — Continued 

 Genus Buteo Lac6pede — Continued 



Subgenus Buteo Lac6pede— Continued Page 



Buleo jamaicensis jumosus Nelson 264 



Buteo jamaicensis socorroensis Ridgway 264 



Buteo jamaicensis costaricensis Ridgway 265 



Buteo harlani (Audubon) 267 



Buteo galapagoensis (Gould) 272 



Buteo albonotatus albonotatus Kaup 275 



Buteo albonotatus abbreviatus Cabanis_ 279 



Buteo lineatus lineatus (Gmelin) 280 



Buteo lineatus elegans Cassin 287 



Buteo lineatus texanus Bishop 289 



Buteo lineatus alleni Ridgway 290 



Buteo lineatus extimus Bangs 292 



Buteo ridgwayi (Cory) 293 



Buteo swainsoni Bonaparte 295 



Buteo platypterus platypterus ( Vieillot) 306 



Buteo platypterus cubanensis Burns 317 



Buteo platypterus brunnescens Danforth and Smyth 318 



Buteo platypterus insulicola Riley 319 



Buteo platypterus rivierei Verrill 322 



Buteo platypterus antillarum Clark 323 



Subgenus Butaetes Moeschler -- 324 



Buteo lagopus s.-johannis (Gmelin) 325 



Buteo lagopus kamtschatkensis Dementiev 336 



Subgenus Rupornis Kaup 338 



Buteo magnirostris griseocauda Ridgway 338 



Buteo magnirostris xantusi van Rossem 341 



Buteo magnirostris conspectus (Peters) - 342 



Buteo magnirostris peter si Brodkorb 343 



Buteo magnirostris gracilis (Ridgway) 344 



Buteo magnirostris direptor (Peters and Griscom) 345 



Buteo magnirostris argutus (Peters and Griscom) 346 



Buteo magnirostris sinus-honduri Bond 347 



Buteo magnirostris petulans van Rossem 348 



Buteo magnirostris alius (Peters and Griscom) 350 



Buteo magnirostris insidialrix (Bangs and Penard) 350 



Subgenus Buteola Bonaparte 352 



Buteo brachyurus Vieillot - -- 352 



Subgenus Asturina Vieillot - 358 



Buteo nitidus plagiatus (Schlegel) 359 



Buteo nitidus maximus (van Rossem) 362 



Buteo nitidus micrus Griscom 364 



Buteo nitidus blakei Hellmayr and Conover 367 



Genus Parabuteo Ridgway 368 



Key to the races of Parabuteo unicinclus 370 



Parabuteo unicinclus harrisi (Audubon) 370 



Parabuteo unicinclus superior van Rossem 374 



