788 



BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



rostrhamus, Falco, 136. 



Rostrhamus, 63, 64, 66, 113, 130, 548. 



hamatus, 136. 



hamatus taeniurus, 136. 



leucopvgus, 135. 



niger, 130, 136. 



plumbeus, 138, 140. 



sociabilis, 131, 132, 133, 137-139. 



sociabilis levis, 131, 139, 140. 



sociabilis major, 131, 138, 139. 



sociabilis plumbeus, 131, 136, 137, 

 139, 140. 



sociabilis sociabilis, 131, 135, 138, 

 139. 



sociabilis taeniurus, 136. 



socialis socialis, 135. 



taeniurus, 136. 



toeniurus, 136. 



uncinatus, 107. 

 Rostrihamus, 130. 



sociabilis, 134. 



tenuirostris, 136. 

 Rostrohamus, 130. 



sociabilis, 135. 

 rudolfi, Falco, 668. 



Falco peregrinus, 665. 

 rufescentior, Buteo, 254, 257. 

 ruficauda, Asturina, 341-345, 347-350. 



Butco magnirostris, 349. 



Buteo (Rupornis) magnirostris, 347, 

 349. 



Rupornis, 341-345, 347, 348, 349, 

 350. 



Rupornis magnirostris, 347, 349. 

 ruficaudus, Accipiter, 245. 



Buteo magnirostris, 349. 

 ruficoUis, Cathartes, 11, 33, 34. 



Cathartes aura, 33, 34. 



Clamosocircus, 565. 



Climacocercus, 564. 



Micrastur, 564, 566, 576, 578. 



Micrastur ruficoUis, 564. 



Sparvius, 560, 564, 566, 578. 

 rufigularis, Falco, 674, 679-681. 



Falco (Hypotriorchis), 679. 



Falco albigularis, 679. 



Hypotriorchis, 674, 679, 681. 

 rufilatus, Accipiter, 195. 



Accipiter fuscus, 195, 198. 



Accipiter velox, 195, 198. 

 rufinus, Buteo, 211. 

 rufipes, Falco, 614. 

 rufulus. Circus, 205. 



Heterospizias meridionalis, 205, 

 208. 

 rupicoloides, Falco, 615. 

 rupicolus, Falco, 616, 716. 

 Rupornis, 63, 210, 212, 338. 



gracilis, 343, 344. 



griseicauda, 340, 341, 343. 

 griseocauda, 340. 

 magnirostris, 351. 

 magnirostris alia, 350. 

 magnirostris argula, 347. 

 magnirostris conspecta, 342. 

 magnirostris direptor, 346. 



Rupornis magnirostris gracilis, 344. 



magnirostris griseicauda, 340, 342, 

 343, 346. 



magnirostris griseocauda, 340, 344, 

 346. 



magnirostris insidiatrix, 351. 



magnirostris magnirostris, 351. 



magnirostris ridgwayi, 295. 



magnirostris ruficauda, 347, 349. 



magnirostris subsp., 344. 



ridgwayi, 212, 295. 



ruficauda, 341-345, 347-350. 



ruficauda gracilis, 343. 



ruficauda griseicauda, 340, 342. 

 rusticolus, Falco, 640, 648. 



Falco (Hierofalco), 633, 638. 



Falco rusticolus, 641. 



Hierofalco, 641. 

 rutilans, Asturina, 205, 210. 



Buteo, 160, 205, 210. 



Circus, 210. 



Falco, 205, 210. 



Hypomorphnus, 210. 

 Rypornis, 212. 



sacer, Cathartes, 17. 



Falco, 615, 645, 647. 



Falco (Hierofalco), 645. 



Falco gyrfalco, 645. 



Falco (Hierofalco) gyrfalco, 645. 



Hierofalco, 645. 



Hierofalco gyrfalco, 645, 647. 



Hierofalco rusticolus, 645. 



Sarcoramphus, 17. 



Sarcorhamphus, 17. 



Vultur, 17. 

 Sacer americanus, 645. 

 sacra, Vultur, 17. 

 Sagittariidae, 8, 60, 61, 64. 

 Sagittarinae, 61. 

 Sagittarioidea, 61. 

 Sagittarius, 61. 



serpentarius, 579. 

 salvini, Accipiter, 149, 204. 



Accipiter erythronemius, 149. 



Nisus, 149, 204. 

 sancti-joannis, Falco, 329. 

 sancti-johannis, Archibuteo, 331. 



Archibuteo lagopus, 332, 334, 337. 



Archibuteo lagopus sancti-johan- 

 nis, 334. 



Butaetes, 329. 



Buteo, 329. 



Buteo lagopus, 329. 



Triorchis lagopus, 334. 

 sancto-johannis, Archibuteo, 331. 

 saquer, Falco, 615. 

 Sarcoramphidae, 7. 

 Sarcoramphinae, 7. 

 Sarcoramphos, 11. 



californianus, 56. 



californica, 59. 

 Sarcoramphus, 5, 7, 10, 11, 17. 



californianus, 56. 



