58 FALCONID^. 



Section B. Majores. Aloe remigihus externis trihvs in pogonio interno excids ; 



Cauda brevis ; alee Icmgissimce. 



2. Buteo albicandatus. 



Aguila coliblanca, Azara, Apunt. i. p. 69 '. 



Buteo albicaudaius, Vieill. N. Diet. d'Hist. N. iv. p. 477 ^ Salv. P.Z.S. 1870, p. 315' ; Ferrari- 

 Perez, Pr. U. S. Nat. Mus. ix. p. 167*; Bendire, Life Hist. N. Amer. Birds, p. 234, t. 7. 

 figs. 8, 9° ; Fisher, Bull. U. S. Dep. Agr. do. 3, p. 72\ 



Tachytriorchis albicaudntus, Sharpe, Cat. Birds Brit. Mus. i. p. 162 '' ; Sumiehrast, La Nat. v. 

 p. 236 ^ 



Buteo albicaudatus sennetti, Allen, Bull. Am. Mus. N. H. v. p. 144 °. 



Tachytriorchis sennetti, Sharpe, Hand-list Birds, i. p. 255 '°. 



Falco pterocles, Temm. PI. Col. tt. 56, 139 ". 



Buteo pterocles, Lawr. Bull. U. S. Nat. Mus. no. 4, p. 41 ". 



Tachytriorchis pterocles, Cab. J. f. Orn. 1869, p. 210". 



Buteo erythronotus, Sol. P. Z. S. 1857, p. 211 " (nee King) ; 1859, pp. 368 '% 389" ; Scl. & Sak. 

 IbLs, 1860, p. 401 " ; Lawr. Ann. Lye. N. Y. ix. pp. 133", 207"; v. Frantz. J. f. Om. 

 1869, p. 368". 



Buteo albonotatus, Sel. & Salv. Ibis, 1859, p. 217 "(nee Kaup). 



Supra plumbeus, capite summo et cervicis lateribus grisescentioribus ; loris albis ; dorso jjostico et tectricibns 

 supracaudalibus pure albis ; humeris ferruginosis et seapularibtis ferrugineo intennixtis : subtus pure 

 albus, gula vix plumbeo striata ; hypochondriis fasciis paucis tenuibus notatis ; alls apieibus plumbeo- 

 nigris, mediaUter palUdioribus, leviter griseo fasciatis ; subalaribus albis ; axiUaribus albis, plumbeo 

 transfaseiatis ; cauda alba, supra griseo tincta et fasciis angustis griseis transnotata, fascia lata subapicaJi 

 nigra ; cera et pedibus flavis. Long, tota circa 19'0, alas 16"6, caudae 7'0, tarsi 3-5. (Descr. exempl. ex 

 San Geronimo, Guatemala, ilus. nostr.) 



Forma altera, vix junior, gula tota plumbea. 



Juv. Supra nigricanti-fuscus, humeris vix ferrugineo marginatis ; dorso postico albo, plumis omnibus fascia 

 lata subterminali fiisca notatis ; cauda supra grisea baud fasciata, ad apicem obscuriore : subtus nigri- 

 canti-fuscus, plumis omnibus ad basin albis et fulvo marginatis ; tibiis et tectricibus subeaudalibus cervinis 

 fusco maculatis. 



Hab. NoETH Amekica, Lower Rio Grande Valley, Texas ^ ^ ^. — Mexico, Zacatecas (W. B. 

 Bichardson), Jalapa (de Oca ^^, Ferrari-Perez *), Mirador (Sumiehrast ^), Orizaba 

 {Botteri i*), Talea (Boucard ^% Puebla, Oaxaca, Tehuantepec, Tapana, Tonala, 

 Cacoprieto (Sumiehrast ^ ^^), Merida in Yucatan (Schott ^^) ; Guatemala, Antigua 

 [Constancia i^), Duenas (0. S. & F. 1). G.), El Baoul (0. S.), San Geronimo 

 (B. Owen) ; Costa Rica (v. Frantzius ^^ ^oj^ gan Jose (Carmiol ^% San Antonio 

 (Zeledon ^^) ; Panama, Calovevora, Chitra (Arce ^). — South America generally on 

 the eastern side of the Andes from Colombia and Guiana to Argentina. 



This Buzzard is easily recognized by its white under surface and long wings, the 

 latter extending beyond the tip of the tail, the three outer primaries only are excised *. 

 The rectrices are crossed by numerous bands of dusky brown, thirteen in number. 



^* Dr. Coues says that four primaries are excised, but we do not find this to be the case. 



