70 FALCONlDiE. 



Cherrie, Auk, 1890, p. 333'; 1892, p. 328"; Richmond, Pr. U. S. Nat. Mus. xvi. p. 522'; 



Bendire, Life Hist. N. Amer. Birds, p. 24, t. 7. ff. 10-13"; Fisher, Bull. U. S. Dep. Agr. 



no. 3, p. 79, t. 10"; A. 0. U. Check-list N. Amer. Birds, p. 133". 

 Falco pennsylvanicus,Wi\s. Am. Orn. vi. p. 92, t. 54. f. 1 (nee vi. t. 46. f. \ = Accipiter velox)^^. 

 Buteo pennsylv aniens, Scl. P. Z. S. 1857, p. 211 " ; Scl. & Salv. Ibis, 1859, p. 217 '' ; P. Z. S. 1864, 



p. 369" ; Lawr. Ann. Lye. N. Y. vii. p. 288" ; ix. p. 133"; Bull. U. S. Nat. Mus. no. 4, 



p. 41" ; V. Frantz. J. f. Orn. 1869, p. 368'° ; Salv. P. Z. S. 1870, p. 215"; Ferrari-Perez, 



Pr. U. S. Nat. Mus. ix. p. 167 =^ 



<S . Supra brunneus, griseo adumbratus ; tectricibus alarum minimis et medianis dorso concoloribus, 

 majoribus autem remigibusque griseseenti-brunneis, apicem versus saturate brunneis, et fasciis saturate 

 brunneis paucis notatis ; supracaudalibus, praecipue his lateralibus, late albo maculatis vel fasciatis ; 

 Cauda saturate brunnea, brunneo subterminaliter ante marginem apicalem terminata, et fasciis albidis 

 3-notata, fascia brunnea mediana et subterminali latissimis ; gutture albido, anguste brunneo striolato ; 

 fascia mystacali saturate brunnea : corpore reliquo subtus maculis rufis et albis fasciatim variegato, 

 hypochondriis tibiisque rufo magis distincte fasciatis ; subcaudalibus albis ; subalaribus albis, macuLis 

 sagittiformibus parvulis notatis ; axillaribus albis, rufo fasciatis ; remigibus intus albis. Long, tota 14'5, 

 alse 10'6, caudae 6-0, culm. I'l, tarsi 2*6. (Descr. maris ex Boquete de Chitra. Mus. nostr.) 



5 . Mari similis, sed paullo saturatior et subtus brunneo magis marmoratus. Long, tota circa 17"0, alse 10-9. 



(Descr. fern, ex Duenas. Mus. nostr.) 

 Juv. Brunneus, rufo variegatus ; pileo et interscapulio albido striolatis ; supracaudalibus lateralibus conspicue 

 albo fasciatis ; cauda brunnea, fasciis 8 saturatioribus, fascia subterminali latiore ante apicem pallidam : 

 subtus albus, maculis longitudinalibus et cordatis : tibiis magis distincte brunneo fasciatis. (Descr. 

 exempl. juv. ex Duenas. Mus. nostr.) 



Hah. Easterit North America, from New Brunswick and the Saskatchewan Region to 

 Texas. — Mexico, Presidio de Mazatlan (Forrer), Volcan de Colima ( W. B. Richard- 

 son), Orizaba (JBotteri ^ i*), Coatepec (M. Trujilio), Jalapa {Ferrari- Perez ^^), Santa 

 Efigenia {F. Sumichrast ^ ^^) ; Guatemala {Skinner ^% Santa Rosa above Salama 

 {0. S.), Duenas, San Geronimo {0. 8. & F. B. 0.); Nicaragua, La Libertad 

 and Santo Domingo, Chontales, Leon ( W. B. Richardson), Rio Escondido {C. W. 

 Richmond ^) ; Costa Rica^ San Jose {v. Frantzius, C. F. Underwood, G. K. Cherrie ^, 

 J. Carmiol^^, A. Boucard^), Jimenez {J. Zeledon^), Angostura {J. Carmiol^^), 

 Carillo, Barba (C. F. Underwood), San Lucas, Talamanca {Mus. Nac. Costa Rica) ; 

 Panama (/. M'Leannan ^^ ^''^ Boquete de Chitra, Calovevora, Calobre, Volcan de 

 Chiriqui {E. ArcS^^), Paraiso Station {Hughes). — Colombia^; Ecuador; Venezuela; 

 Upper Amazons ^ ; Greater and Lesser Antilles. 



The small size of B. latissimus is perhaps the chief characteristic by which it can be 

 istinguished, but it may also be recognized by the excisions on the inner web of the 

 primaries, only three of which exhibit this peculiarity. The species is, on this account, 

 nearly allied to B. swainsoni and B. albifrons. The marking of the tail in B. latissimus 

 is peculiar, the adult having three dark and two light bars, while the young birds have 

 five dark bars, of which the subterminal one is much the broadest. 



It breeds throughout the greater part of North America ^^, as far north as New 

 Brunswick, Southern Canada, and the Saskatchewan region, becoming gradually scarcer 



