772 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Falco washingtoniensis, 494. 



washingtonii, 495. 



wilsonii, 316. 



xanthotliorax, 560, 564, 565, 576. 



yetapa, 91. 



zonurus, 392, 395. 

 Falcobaenus, 546. 

 Falcolus, 615. 

 Falcon, Carraca, 436. 



Central American carrion, 582. 



Central American pied forest, 567. 



Central American white-throated, 

 674. 



chocolate, 335, 504. 



Costa Riean barred forest, 577. 



crested, 436. 



Domingo, 751. 



dusky, 701. 



Mexican barred forest, 574. 



Mexican laughing, 552. 



northern, 170. 



northern Aplomado, 683. 



northern carrion, 592. 



northern MirandoUe's forest, 572. 



Peale's, 667. 



prairie, 623. 



red-shouldered, 282. 



red-throated, 587. 



Siberian peregrine, 665. 



Sonora white- throated, 681. 



South American carrion, 585. 



southern Aplomado, 687. 



southern laughing, 555. 



spotted, 653. 



St. John's 328. 



Temminck's, 671. 

 Falconeae, 612. 

 Falcones, 3-6, 59-61, 64, 524, 543, 549, 



558, 560, 579, 597, 612. 

 Falcones longipedes, 612. 

 Falcones normales, 612. 

 Falconi, 60. 

 Falconiae, 543. 

 Falconidae, 2, 8, 59, 60, 62-64, 113, 524, 



543-545, 612. 

 Falconiformes, 1-3, 6, 526, 612. 

 Falconinae, 64, 543, 544, 549, 612. 

 Falcons, 597, 621, 631, 648, 690. 



forest, 543, 558. 



laughing, 543, 548, 550. 



pygmy, 543, 544. 



serpent-eating, 550. 



true, 543, 550, 612. 

 Falcula, 614. 

 falklandica, Catharista, 34, 



Cathartes aura, 33, 34. 



Oenops, 34. 

 falklandicas, Cathartes, 34. 

 Falso columbarius, 704. 

 fasciata, Caracara, 582. 



Cerchneis, 722. 

 fasciatus, Accipiter, 142. 



Circaetus, 582. 



Falco, 722. 



Gymnops, 580, 582. 



fasciatus, Harpagus, 118. 



Harpagus bidentatus, 115, 116, 118. 



Ibycter, 582. 



Pandion, 541, 582. 

 feldeggi, Falco, 621. 

 femoralis, Aesalon, 685, 688. 



Bidens, 688. 



Falco, 616, 685, 687. 



Falco (Aesalon), 688. 



Falco (Hvpotriorchis), 685. 



Falco (Rhynchofalco), 684, 685, 

 688. 



Falco femoralis, 619, 687. 



Hypotriorchis, 685, 688. 



Rhynchofalco, 085. 



Rhynchofalco fusco-caerulescens, 

 688. 

 ferox, Accipiter, 211. 



Falco, 211. 

 Harpyia, 437. 

 ferrugineus, Archibuteo, 227, 236, 336. 



Buteo, 230. 



Falco, 212, 227, 236. 



Falco (Buteo), 227. 



Hypotriorchis, 753. 



Lagopus, 227. 



Tinnunculus, 753. 



Triorchis, 230. 

 ferruginicaudus, Buteo, 245. 

 fidens, Accipiter bicolor, 148, 166, 167. 

 flexipes, Geranospiza gracilis, 518. 

 floridana, Haliaeetus, 489. 

 fluviales, Triorches, 525. 

 fluvialis, Pandion, 525. 

 foetens, Catharista, 29. 



Catharista urubu, 29. 



Cathartes, 29. 



Cathartes atratus, 21. 



Coragyps, 29. 



Coragyps atratus, 29. 



Coragyps urubu, 29. 



Vultur, 30. 

 foetidus, Vultur, 18, 30, 

 fontainieri, Accipiter, 183. 



Jeraspiza, 183. 

 fontanieri, Accipiter superciliosus, 146, 



147, 149, 182, 183. 

 forbesi, Leptodon, 94. 



Odontriorchis, 94, 100. 

 forficatus, Elanoides, 83, 84, 85, 92. 



Elanoides forficatus, 83, 87, 90, 93, 

 515. 



Falco," 82. 85. 



Nauclerus, 85, 92, 

 formosus, Falco, 587. 



Ibycter, 587. 

 francescii, Accipiter, 142, 

 frenatus, Falco, 563, 

 fringillarius, Aesalon, 141, 



lerax, 141. 

 fringilloides, Accipiter, 195, 199, 200, 

 202. 



Accipiter fuscus, 200, 201. 



Accipiter striatus, 147, 200, 201. 



Nisus, 201. 



Nisus fuscus, 201. 



