NATURAL SCIENCES OF PHILADELPHIA. 93 



6. G. pennsylvanicus. Adult. Above nearl}' uniform dusky- 

 brown, darker on the back; below dull rufous-brown, much 

 broken, especially posteriorly, by transverse spotting of 

 white. Wing, 9.85-11.40 ; tail, 6.50-8.00 ; culmen, .70-.78 ; 

 tarsus, 2.15-2.80; middle toe, 1.20-1.40. Hab. Eastern 

 Province of North America, and Cuba; in winter migrating 

 southward through West Indies and eastern Middle America 

 to upper Amazonia and Columbia. 



1. Buteo (Craxirex) galapagoensis. 



Polyborus galapagoensis, Gould, P. Z. S. 1837, 9. Craxirex galapagoensis, 

 Gould, Zool. Beagle, pt. 3, 1841, 23, pi. 2. Gray, Gen. 2 ; ed. 2, 3 ; 

 List Gen. and Subg. Brit. Mus. 2. Bonap. Consp. 1850, 34. Buteo 

 galapagoensis, Gray, List B. Brit. Mus. 1844, 18; Gen. fol. 1849, 12, 

 sp. 12 ; Hand List, I. 18G9, 7. Strickl. Orn. Syn. I. 31. Sund. P. Z. 

 S. 1871, 125, 127. Scl. & Salv. Norn. Neotrop. 1873, 119. Sharpe, 

 Cat. Ac. B. M. 1874, 170. Dromolestes galapagoensis, Sund. Disp. 

 Ace. Henieroharp. 1874, 27. Buteo leucops, Gray, Cat. Ace. 1848, 

 3G ; Weigm. Arch. XVI.vl850. Bonap. Consp. 1850, 17. Pcecilop- 

 ternis infulattis, Kaup. Contr. Orn. 1850, 76. 



Habitat. Galapagos Islands, only. 



Description. "Adult male (t} r pe of species): Everywhere sooty 

 black, with a brownish shade, especially distinct on the wing- 

 coverts ; quills black, the secondaries browner, and tipped with 

 buffy white, the primaries externally shaded with aslw, all barred 

 with blackish-brown, more distinctly below, where the interspaces 

 are dull ashy-white ; tail grayish-brown, tipped with fulvous, and 

 crossed with thirteen blackish bars, the subterrainal one slightly 

 the broadest ; under surface of the body sooty black, with a clearer 

 shade of brown, more distinct on the under wing-coverts, which 

 are also tinged with rufous. Total length 20.50 inches, culmen, 

 1.7. ; wing, 15.15 ; tail, 9.2 ; tarsus, 2.85." (Sharpe, 1. c.) 



Young (specimens in the Museum of the Academy of Natural 

 Sciences of Philadelphia) : (1) Tail brownish-gray, fading narrowty 

 into whitish at the tip, and crossed by about eleven narrow, rather 

 distinct, bands of black. Prevailing color blackish-brown, the head, 

 neck, and lower parts variegated with pale ochraceous, chiefly in 

 the form of a basal spotting, most exposed on the head, neck, and 

 breast. Tail coverts barred transversely with ochraceous-white. 

 Wing, 16.80; tail, 10.70; culmen, 1.25; tarsus, 2.65; middle toe, 

 2.10. Fourth quill longest ; first shorter than seventh. (2) Tail 

 brownish-gray, with a hoary cast, faintly whitish at the tip, and 



