116 PROCEEDINGS OF THE ACADEMY OF 



tive Zoology, Cambridge, Mass., 1 ; of George N. Lawrence, Esq., 

 2; of William Brewster, Esq., 1; of Charles E. Aiken, Esq., 3; 

 of R. Ridgway, 5. Total number of specimens examined, 104. 



Buteo (Craxirex) pennsylvanicus (Wils. ). 



Falco pennsylvanicus, Wils. Am. Orn. VI. 92, pi. liv. f. 1, 1812 (nee. V. pi. 

 46, fig. 1 !). Lath. Gen. Hist. I. 263, 1821. Aud. B. Am. pi. xci. 

 1831 ; Orn. Biog. I. 461, 1831. Bonap. Ann. Lye. N. Y. II. 29, 434; 

 Isis, p. 1137, 1832. Nutt. Man. 1. 105, 1833. Temm. PI. Col. 67, 1836. 

 Buteo pennsylvanicus, Bonap. Oss. Cuv. Reg. An. p. 35,1830; 

 Eur. & N. Am. B. p. 3, 1838 ; Consp. Av. p. 19, 1850. Aud. Syn. 

 p. 7, 1839. Brew. (Wils.). Am. Orn. Syn. p. 648, 1852. Gray, Gen. 

 sp. 8, 1844; List B. Brit. Mus. p. 16, 1844; Hand List, I. 1869, 7. 

 Cass. B. Cal. & Tex. Syn. p. 100, 1854. Strickl. Orn. Syn. I. 32, 1855. 

 De Kay, Zool. N. Y. II. 11, pi. v. fig. 11, 1844. Cass. Birds N. Am. 

 29, 1858. Dresser, Ibis, 1865, 325 (Texas), Scl. P. Z. S. 1858, 451 

 (Ecuador, winter) ; P. Z. S. 1857, 211 (Orizaba) ; lb. 261 (Upper 

 Amazon). Caban, Jo urn. II. lxxxii. (Cuba). Gundl. Rept. 1865, 

 223 (Cuba, resident). Lawr. Am. N. Y. Lye. VII. 1861, 288 (Pan- 

 ama) ; lb. IX. 133 (Costa Rica). Schl. Mus. P. B. Buteones, 1862, 

 20; Rev. Ace. 1873, 109. Allen, Bull. Mus. Comp. Zool. II. 1871, 

 330. Gundl. J. f. 0. 1871, 266. Pelz. Orn. Bras. 1871, 396. Coues, 

 Key, 1872, 217. Scl. &. Salv. Norn. Neot. 1873, 119. Astur penn- 

 sylvanicus, Cuv. Reg. An. (ed. 2), I. 332, 1829. James. (Wils.) Orn. 

 I. 65. Sund. Disp. Ace. Hemeroharp. 1874, 24. Falco latissimus, 

 Wils. Am. Orn. (last ed.), VI. 1812, 92, pi. liv. f. 1. Astur latissi- 

 mus, Jard. (ed. Wils.) Am. Orn. II. 1832, 294. Buteo latissimus, 

 Sharpe, Cat, Ace. B. M. 1874, 193. Falco wilsoni, Bonap. Obs. Wils. 

 Nomencl. J. Ac. Nat. Sci. Phil. III. 348. Pcecilopternis wilsonii, 

 Kaup, Isis, 1847, 330 ; Cont. Orn. 1850, 75. Buteo wilsoni, Bonap. 

 Consp. I. 1858, 19, Sparvius platypterus, Viell. Enc. Meth. III. 

 1823, p. 1273 (quot. Wils. pi. liv. fig. 1). 



Hob. Eastern Region of North America, eastern Middle 

 America, south to Ecaudor (Sclater), Upper Amazon (Sclater), 

 and Caraccas (New York Mus.). Cuba (resident). 



Diagnosis. Adult: Upper surface dark umber-brown, the 

 feathers gradually paler toward edges ; on the back, the feathers 

 more uniformly dusky, causing a prevalent blackish appearance. 

 Rump and upper tail-coverts blackish vandyke-brown, the latter 

 tipped with pure white, and with a concealed bar of the same, about 

 the middle of each feather. Tail dull black, with an indistinct ter- 

 minal band of dull brown, this fading terminally into whitish ; 

 across the middle of the tail a broad band of dull light umber (in 

 some individuals approaching dull white) about three-fourths of an 



