784 



BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



obsoletus, Hierofalco gyrfalco, 643. 



Hierofalco sacer, 643. 

 occipitalis, Cathartes, 33. 

 ochrocephalus, Haliaetus, 591. 



Milvago, 588, 591. 



Polybonis, 591. 

 Odonthriorchis, 93, 548. 

 Odontotriorchis, 93. 

 Odontriorchis, 63, 93, 101, 115. 



cayanensis, 98. 



cavennensis, 98. 



forbesi, 94, 100. 



palliatus, 94, 99. 



palliatus guianensis, 100. 



palliatus mexicanus, 100. 



palliatus palliatus, 100. 

 Oenops, 31, 51. 



aura, 34, 37, 48. 



burroviana, 38. 



californiana, 59. 



falklandica, 34. 



pernigra, 33, 34. 



urubitinga, 33. 

 Oestuchomorphae, 61. 

 Onychotes, 211. 



gruberi, 211. 

 ophiophaga, Ictinia, 125. 

 ophiophagus, Falco, 125. 

 ophryophanes, Falco rufigularis, 680. 



Hypotriorchis, 680. 

 ophyrophanes, Falco, 680. 



Falco (Hypotriorchis), 680. 

 crientalis, Aquila, 452. 



Falco, 664, 665. 

 ornatus, Falco, 441. 



Morphnus, 446. 



Spizaetus, 442-444, 446, 447, 452. 

 Oronertes, 546. 

 Oronertus, 546. 

 Orubitinga, 388. 



brasiliensis, 408. 

 Osprey, American, 527. 



Bahama, 541. 

 Ospreys, 523. 

 ossifraga, Aquila, 472, 481, 483. 



Falco, 472, 481, 483, 489. 

 Ossifraga, 473. 



albicilla, 481. 

 ossifragus, Falco, 481, 489. 

 oxypterus, Buteo, 305. 



Buteo swainsoni, 306. 



Poecilopternis, 306. 



pacificus, Accipiter velox, 195, 198. 



Nisus, 195. 

 paecilonotus, Falco, 376. 

 Paecilopternis, 211. 



elegans, 289. 

 Paeciplopteryx, 118. 

 Paecilornis, 616. 



sparverius, 737. 

 palliatus, Buteo, 99. 



Chondrohierax, 99. 



Falco, 93, 99, 100. 



Leptodon, 99. 



Odontriorchis, 94, 99. 



palliatus, Odontriorchis palliatus, 100. 

 pallida, Buteo nitidus, 217. 

 pallidus, Archibuteo, 377. 

 Archibuteo lagopus, 337. 

 Buteo, 337. 

 Buteo lagopus, 337. 

 Caracara plancus, 610. 

 Polyborus, 610. 



Polyborus cheriway, 597, 599, 609. 

 Tinnunculus alaudarius, 722. 

 Triorchis lagopus, 337. 

 paludivaga, Milvago chiraachima, 592. 

 paludivagus, Milvago chimachima, 592. 

 palumbarius, Accipiter, 159, 694. 

 Accipiter (Astur), 159. 

 Asterias, 141. 

 Astur, 145, 159. 

 Falco, 141, 145, 159. 

 Nisus 159 

 Pandion, 80, 82, 524-527. 

 americanus, 530. 

 caracara, 598. 

 carolinensis, 530, 531, 542. 

 fasciatus, 541, 582. 

 fluvialis, 525. 

 fulvus, 396. 

 haliaeetus, 541. 

 haliaeetus carolinensis, 538. 

 haliaetos, 541. 

 haliaetos carolinensis, 538. 

 haliaetus, 528, 539, 542. 

 haliaetus carolinensis, 97, 527, 531, 



538, 541, 542. 

 haliaetus haliaetus, 527. 

 haliaetus subsp., 542. 

 haliaetus ridgwayi, 527, 541, 542. 

 haliatus, 541. 

 halietus carolinensis, 538. 

 ridgwayi, 542. 

 ridgweir, 542. 

 strigilatus, 582. 

 washingtonii, 495. 

 Pandiones, 80, 523. 



Pandionidae, 3, 60-62, 64, 81, 523-525. 

 Pandioninae, 523. 

 Pandiun, 525. 



haliaetus, 540. 

 Pannychistes, 614. 

 papa, Catharistes, 17. 

 Cathartes, 14. 

 Gypagus, 14. 

 Gyparchus, 17. 

 Sarcorampus, 12, 13, 15. 

 Sarcorhamphus, 16. 

 Sarcorhampus, 17. 

 Sarcorrhamphus, 17. 

 Vultur, 11, 14. 

 Parabuteo, 63, 67, 368. 

 harrisi, 372, 376. 

 unicinctus, 370, 371, 374, 375. 

 unicinctus harrisi, 306, 370, 372, 



374, 375. 

 unicinctus superior, 370, 374, 376. 

 unicinctus unicinctus, 370. 

 Parasifalco, 588. 

 • Paraspixias, 141. 



