766 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Climacocercus guerilla interstes, 578. 



plumbeus, 564. 



ruficollis, 5G4. 



semitorquatus, 562, 571. 



zonothorax, 565, 566, 578. 

 Climacourus, 560. 

 coerulescens, Geranospiza, 521, 522. 



Sparvius, 522. 

 collaris, Accipiter, 146, 147, 183. 



Astur, 146. 



Micronisus, 146. 

 colonus, Buteo albicaudatus, 224, 233, 



236. 

 columbarius, Aesalon, 701, 707. 



Aesalon lithofalco, 701, 707. 



Falco, 694, 703, 712, 713. 



Falco (Aesalon), 692, 697. 



Falco (Hypotriorchis), 697, 709. 



Falco columbarius, 195, 619, 620, 

 691, 697, 702, 704, 707, 712. 



Falco lithofalco, 697, 705. 



Falco (Aesalon) lithofalco, 697, 705. 



Falso, 704. 



Hypotriorchis, 701, 707, 712. 



Tinnunculus, 616, 700. 



Tinnunculus columbarius, 700, 705. 

 columbianus, Vultur, 59. 

 communis, Falco, 616, 664. 

 concentricus, Climacocercus, 565. 



Micrastur, 565, 576. 



Nisus, 565, 576. 

 conciliator, Falco, 382. 

 Condor, California, 53. 



South American, 52. 

 conspecta, Rupornis magnirostris, 342. 

 conspectus, Buteo magnirostris, 215. 



342, 343. 

 Cooperastur, 141. 



bicolor, 164. 



cooperi, 179. 



gundlachii, 181. 



mexicanus, 179. 



pectoralis, 148. 



pileatus, 148. 



stanleyi, 179. 

 cooperi, Accipiter (Cooperastur), 178. 



Accipiter cooperi, 178. 



Astur, 170, 181. 



Buteo. 268, 271, 272, 286. 



Cooperastur, 179. 



Falco, 141. 



Lepthierax, 179. 



Nisus, 178. 



Nisus (Nisus), 178. 



Nisus cooperi, 178. 



Tachytriorchis, 272. 

 cooperii, Accipiter, 147, 148, 167, 168, 

 170^ 176, 180, 181. 



Accipiter cooperii, 178. 



Accipitre, 176. 



Falco, 170, 181. 

 Coraciae, 4, 6. 

 Coraciiformes, 4, 6. 

 Coraciine, 524. 

 Coragups Atratus, 26. 

 Coragyps, 9, 10, 17, 19, 39. 



Coragvps atrata, 26. 



atratus, 19, 20, 22, 25. 



atratus atratus, 24, 36. 



atratus brasiliensis, 30. 



atratus foetens, 29. 



brasiliensis, 30. 



foetens, 29. 



urubu, 8, 28. 



urubu foetens, 29. 



urubu urubu, 28. 

 Coragypus, 17. 



cordata, Milvago chimachima, 595. 

 cordatus, Milvago chimachima, 592, 595. 

 coronata, Harpyia, 420. 

 coronatus, Circaetus, 420. 



Gypaetus, 436. 



Harpvhaliaetus, 420. 



Vultur, 436. 

 Coryornis, 212, 213. 



ridgwayi, 295. 

 costaricensis, Asturina nitida, 368. 



Buteo, 266. 



Buteo borealis, 264-266. 



Buteo jamaicensis, 222, 265, 266, 

 267 



Leucopternis albicollis, 378, 379, 

 381, 382. 



Leucopternis ghiesbrechti, 381. 



Leucopternis ghiesbreghti, 381. 

 Cracirex, 211. 

 Craxireginae, 63. 

 Craxirex, 211. 



albicaudatus, 235. 



galapagoensis, 274. 



gallopagoensis, 274. 



harrisii, 372, 375. 



swainsoni, 305. 



unicinctus, 374, 375. 



unicinctus harrisii, 372, 375. 

 "Cresserelles," 616. 

 cristata, Harpyia, 436. 

 cristatus, Falco, 436, 437. 



Morphus, 427. 

 crotophagus, Falco, 591. 

 cubanensis, Buteo platvpterus, 218, 219, 



317, 318, 319. 

 cucullatus, Falco, 680. 

 cuculoides, Aviceda, 81, 94. 



Cymindis, 108. 

 Cucuma, 472. 

 cucr -'.s, Elanus, 74. 

 Cuncuma, 472. 

 Curvieria, 615. 

 cuvieri, Falco, 615. 

 cyanescens, Falco, 688. 

 cyaneus, Buteo (Circus), 504. 



Circus, 500, 501, 504. 



Falco, 498, 504. 

 cyanopus, Asturina, 99. 

 cycneus, Falco, 504. 

 Cymeudis, 93. 

 Cymindes, 93, 130. 



leucopygus, 130, 135, 137, 140. 



sociabilis, 135, 137-139. 



sociabilis plumbeus, 138, 139. 

 Cymindis, 93, 100, 130. 



