PICARIAE TROCH1LIDAE SELASPHORDS PLATYCERCUS. 377 



the fauna of that Territory. This was in August, when the birds were 

 migrating ; in this section it appears wholly absent during summer. 



SELASPHORUS PLATYCEHCUS (Swains.). 



Broad-tailed Hummingbird. 



Trochilvs platycercus, SWAINS., Phil. Mag., i, 1827, 441 (Mexico). 



8elas2>horus platycercus, BD., Birds N. A., 1858, 135, 922. Id., U. S. & Mex. Bound. 

 Surv., ii, pt. ii, 1859, Birds, 6, pi. v, figs. 1, 2. HENRY, Proc. Acad. Nat. 

 Sci. Phila,, 1859, 100 (New Mexico). COUES, Proc. Acad. Nat. Sci. Phila., 

 1800, 57. COOPER, Proc. Cal. Acad., 1801 , 08. Id., Birds Cal., i, 1870,357. 

 ALLEN, Bui. Mus. Cornp. Zool., iii, 1872, 180 (western edge of plains, and 

 mountains of Colorado up to timber line ; Cheyenne, Wyo. ; Ogdeu, Utah). 

 COUES, Key N. A. Birds, 1872, 185. HOLD., Proc. Bost. Soc. Nat. Hist., 



1872, 200 (Wyoming). BD., BREW., & RIDG., N. A. Birds, ii, 1874, 402, pi. 

 47, f. 5. HENSHAW, An. Lye. Nat. Hist, N. Y., xi, 1874, 8. 1<7., An. 

 List Birds Utah, 1872, Wheelers Exped., 1874, 47. Id., Rep. Orn. Specs., 



1873, Wheeler's Exped., 1874, 88, 132. COUES, Birds Northwest, 1874, 271. 



The Broad-tailed Hummer possesses a wide distribution, and in Utah, 

 Colorado, New Mexico, and Arizona is the most common and generally diffused 

 of the family ; being found in the breeding season throughout the mountain 



