FALCO. 117 



Mat. Mus. X. pp. 583", 592=° ; Cherrie, Auk, 1892, p. 327 ■' ; Richmond, Pr. U. S. Nat. 



Mus. xvi. p. 020"' ; xviii. p. 628" ; Salvad. Boll. Mus. Zool. Torino, xiv. no. 339, p. 11 '-* ; 



Nelson, N. Am. Fauna, no. 14, p. 38 -\ 

 Falco aurantius, Licht. Preis-Verz. Mex. Vog. p. 3"" (c/. J.f. Orn. 1863, p. 58") (ex Latham). 

 Hypotriorchis aurantius, Lawr. Ann. Lye. N. Y. ix. p. 207 ". 



Supra Bcbistaceus, plumis medialiter nigro obscaratis, rhachidibus nigro valde indicatis ; pileo et facie lateral! 

 nigerrimis, coneoloribus ; remigibus nigris, intus vix albo fasoiatim notatis ; rectricibus nigris, griseo vel 

 albido 4- vel 5-fasciatis ; gutture et praepectore albis, hoc rufo lavato : pectore toto et hj-poehondriis nigris, 

 albo transversim fasciatis ; abdomine, tibiis et subeaudalibus saturate castaneis, coneoloribus ; subalaribus 

 et axillaribus nigris, maculis ovatis ochrascenti-albis notatis ; cera et plaga nuda orbitali flavis ; pedibns 

 pallide aurantiaeis; iride saturate brunnea. Long, tota circa 9-0, alse 7-1, eaudse 34, culm. 0"65, 

 tarsi 1-2. (Bescr. maris ex fl. Escondido, Nicaragua, ilus. nostr.) 



$ ad. mari similis, sed major, pectoris fasciis transversis rufescentioribus et latioribus. Long, tota 10"0, 

 alse 8-2. (Deser. feminae ex fl. Escondido, Nicaragua, ilus. nostr.) 



Hab. Mexico {Beppe & ScJiiede^^), Sierra Madre, Sinaloa, Mazatlan, Tres Marias 

 Islands {Grayson^ ^^^^), Santa Efigenia, Tapanatepec, Cacoprieto, Orizaba, 

 Mirador, Vera Cruz (Sumichrast ^''), Playa Vicente (JBoucard ^), Altamira, 

 Tampico (Armstrong ^^), Yucatan {Gaumer'^'^), Merida {Schott^^), Chichen Itza 

 [Chapman^); Guatemala (Constancia-, Skinner^); HojfDURAS, Ruatan Island 

 {Gaumer ^", Townsend^^), San Pedro {Whitely% Segovia Eiver (Townsend^^); 

 NiCAEAGUA, Escondido River {Richmond 2^) ; Costa Rica [Carmiol ^^), San Jose 

 {Cherrie ^^), La Palma de San Jose, Pozo Azul de Pii-ris {Zeledon ^^) ; Panama, 

 Line of Railway (M^Leannan ^), Calovevora ^^, Volcan de Chiriqui i", Santa 

 Fe^ (Arce), Punta de Sabana {Festa^^). — South America generally, excepting 

 the extreme south ^^. 



Though, like other Falcons, somewhat difficult to procure, F. rufigularis is widely 

 distributed throughout South and Central America, extending as far north as the 

 State of Sinaloa in Mexico. In Guatemala and Costa Rica the species is less plentiful, 

 and we did not meet with it in the former country. A favourite hunting-ground is in 

 the clearings of the forest, where, perched on a dead tree, the bird observes and pounces 

 on its prey. The food consists of birds, grasshoppers, &c., and Mr. Richmond records 

 an instance of one capturing a large moth, which was flitting over the tree-tops, on the 

 Escondido River, in Nicaragua ^^. These accounts of the habits of F. rufigularis 

 suggest an alliance with the Hobby, but the rapid flight resembles that of the Peregrine, 

 while in the noisy cry it is like the American Kestrel {Tinnunculus sparverius) and the 

 " Kill-deer Plover " [Mgialitis vociferans) ^^. 



The nest and eggs are unknown. 



4. Falco deiroleucus. (Tab. LXVI.) 



Falco deiroleucus, Temm. PI. Col. 348 \ 



Hypotriorchis deiroleucus, Salv. Ibis, 1861, p. 354 " ; P. Z. S. 1870, p. 215 ' ; Lawr. Ann. Lye. N. Y. 



ix. p. 134 * ; V. Prantz. J. f. Orn. 1869, p. 369 \ 

 Falco aurantius, Gm. Syst. Nat. i. p. 283 (?)^; Sharpe, Cat. Birds Brit. Mus. i. p. 402'. 



