756 



BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



Accipiter velox, 187, 196, 198, 201. 



velox pacificus, 195, 198. 



velox rufilatus, 195, 198. 



velox velox, 192, 196, 198. 



velox venator, 202. 



venator, 202. 



ventralis, 149. 



ventralis nigroplumbeus, 149. 



ventralis ventralis, 149. 



virgatus, 565. 

 Accipiter cauda furcata, 85. 

 Accipitre cooperii, 176. 



fuscus, 187. 

 Accipitres, 1, 2, 4, 59, 60, 64, 524. 

 Accipitres diurnes, 2. 

 Accipitres diurni, 2. 

 Accipitridae, 4, 6, 8, 62-64, 114, 130, 



142, 524, 543, 544. 

 Accipitriidae, 63. 



Accipitrinae, 63-65, 114, 140, 211, 543. 

 Acciptres, 1. 

 Acciptridae, 65. 

 Acciptriformes, 2. 

 Accipitrini, 59. 

 Acipiter fuscus, 179. 

 adelberti, Aquila, 452. 

 Adontriorchis, 94. 

 Aegypiinae, 4, 6, 7, 60, 62, 64. 

 Aegypius, 616. 

 Aelanus, 69. 

 aequinoctialis, Buteogallus, 396-398. 



Falco, 397. 

 Aerospiza, 141. 

 aeruginosus, Circus, 499, 500. 



Falco, 498, 499. 

 Aesalon, 141, 548, 614, 616, 690. 



antillarum, 749. 



carolinensis, 753. 



columbarius, 701, 707. 



columbarius richardsoni, 711. 



columbarius suckleyi, 715. 



dominicensis, 751. 



femoralis, 685, 688. 



fringillarius, 141. 



fusco-caerulescens, 686, 690. 



lithofalco columbarius, 701, 707. 



lithofalco richardsoni, 712. 



lithofalco suckleyi, 715. 



richardsoni, 712. 



richardsonii, 712. 



suckleyi, 715. 

 aesalon, Falco, 615, 616, 709, 715. 

 aethiops, Buteo (.\sturina), 306. 

 Aetomorphae, 2, 60. 

 Aetos, 452. 

 Aetotriorchis, 546. 

 Aetriorchis, 546. 

 Actus, 452, 473. 



aquila, 452, 473. 



pygargus, 452, 473. 

 Afraetus, 453. 

 aguia, Falco, 212. 

 Aigle destructeur, 430. 

 alascanus, Falco ructicolug, 648. 



Haliaeetus leucocephalus, 489, 496. 



Haliaetus, 497. 



alascanus, Haliaetus leucocephalus, 495. 



Haliaetus (= Haliaeetus) leuco- 

 cephalus, 497. 



Hierofalco rusticolus, 648. 

 alasccnsis, Buteo borealis, 256. 



Buteo jamaicensis, 221, 223, 256, 

 257. 



Haliaeetus leucocephalus, 496. 

 alaudarius, Falco, 722. 



Falco (Tinnunculus) alaudarius, 

 722. 



Tinnunculus, 722. 

 albescens, Falco, 145. 

 albicans, Falco, 722. 

 albicaudatus, Buteo, 211, 213, 223, 233, 

 234, 236, 306, 374. 



Buteo (Craxirex), 235. 



Buteo (Tachvtriorchis), 232. 



Buteo albicaudatus, 223, 224. 



Craxirex, 235. 



Tachytriorchis, 235. 

 albicaudus, Falco, 481. 

 albicilla, Aquila, 481, 482, 497. 



Falco, 472, 473, 477, 482, 489, 497. 



Haliaaetus albicilla, 481. 



Hahaeetus, 474, 478, 480, 483, 484, 

 497. 



Haliaeetus H., 480. 



Haliaeetus albicilla, 474, 475, 481, 

 482, 483. 



Haliaetos, 480, 481. 



Haliaetus, 479, 482, 497. 



Haliaetus [ = HaKaeetus], 480. 



Haliaetus (Haliaetus), 480. 



Haliaetus albicilla, 481. 



Ossifraga 481. 



Vultur, 473, 478, 482, 497. 

 albicillus, Haliaeetus, 480. 



Haliaetus, 480, 483, 497. 

 albidus, Accipiter gentilis, 144, 145. 



Aster palumbarius, 144. 



Astur gentilis, 145. 

 albifrons, Asturina, 357. 



Buteo, 357. 



Falco, 357. 

 albigularis, Falco, 616, 670, 674, 677. 



Falco (Neofalco), 672. 



Falco albigularis, 617, 718, 674, 678. 



Hypotriorchis, 679. 

 albinotatus, Tachytriorchis, 277. 

 albipes, Haliaeetus, 472. 

 albocaudatus, Buteo, 235. 

 albogularis, Falco, 678. 

 albonotatus, Buteo, 213, 276, 277, 306, 

 358 



Buteo albonotatus, 220, 275, 277, 

 279. 

 albus, Falco, 641. 



Falco islandus, 641. 

 alcinus, IMachaerirhamphus, 68. 

 Alcyones, 4. 

 Alectromorphnus, 396. 

 alia, Rupornis magnirostris, 350. 

 alius, Buteo magnirostris, 215, 350. 

 alleni, Buteo, 292. 



