218 



ZOOLOGY— r.IllDS. 



Lucus).— XANTtTS, Troc. Aciicl. Kat. Sci. Phila., 1859, 1!)1 (Fort Tejon, 

 Cal.).— Denky, Proc. Aca<l. Nat. Sci. I'Lila., 1859, IOC (New IMexico).— 

 Coop. & Suckl., P. II. 1>. Rep., xii, pt. ii, 18(i0, 183. — Bu., IJev. Am. Hiid.s, 

 i, 1805, li'.lO.— CooPEK, Pioc. Cal. Acad., 1870, I't.—Jd, Birds Cal., ii, 1871, 

 107.— Allen, Bull. Mii-s. Comp. Zocil., 1872, lid. 

 Tachycineia thalansina, Coi'ES, Pioe. Acad. Nat. Sci. Phila., 18CG, 72. — Id., Key N. A. 

 Birds, 1872, 1 13.— Meuiuam, U. S. Geol. Sin v. Terr., 1872, 077 (Oydeii Canon, 

 Utah).— Bu., Brew., & Kidg., N. A. Bird.s, i, 1874, 347, j)!. xvi, f. 11.— 

 Uensiiaw, Bep. t rii. Specs., 1873, Wheeler's Exped., 1874, 00, 76, 104.— 

 Id., An. Lvc. Nat. Uist. N. Y., xi, 1874, 4:.— Id., Au. List. Birds Utah, 1872, 

 \\'lieeler's Exped., 1874, 42.— CouES, Birds Northwest, 1874, 80.- Allen, 

 Proc. Bost. Soc. Nat. Uist., June, 1874, 23. 



This species was first seen in the vicinity of Denver on the 12th of 

 May. 



In Southern Colorado, a few pairs were seen dm-ing the breeding-sea- 

 son in the same localities as the White-bellied Swallow. This species, how- 

 over, attains a much higher altitude, and at 10,000 feet I found it very 

 common and in large colonies. June 7, they had not begun to build, 

 though evidently about to do so in the high pine stubs. 



In Utah, New Mexico, and Arizona, this swallow inhabits the higher 

 regions, being met with in abundance everywhere in suitable localities. It 

 prefers the open spaces in the pine woods or along its edges, and occasion- 

 ally makes its homes in the oak groves, building its nest most usually in 

 the holes abandoned by Woodpeckers. 



