PASSEKES— HIEUNBINIDAE— TAGHYCINETA THALASSINA. 217 



TACHYOINETA BICOLOE (Vieil!.). 

 'White-bellied iSYralloiw. 



Hirundo bicolor, Vjeill., Ois. Am. Sept., i, 1807, 61, pi. xxxi. — Woodh., Sitgreave's 

 Exp. Zimi & Col. Eiv., 1854, 05.— Bd., U. S. & Mex. Bound. Snrv., 

 ii, ]it. ii, 1854, Birds, 11.— Newb., P. E. E. Eep., vi, 1857, 78.— Bd., Birds 

 N. A., 1858, 310.— Xantxjs, Proc. Acad. Kat. Sci. Pbila., 1859, 191 (Fort 

 TejoD, Cal.).— Eeekm., P. E. E. Eep., x, pt. iv, 1859, 3G.— Hekky, Proc. 

 Acad. Nat. Sci. Phila., 1859, 106 (New Mexico).— CooP. & Suckl., P. E. E. 

 Eep., xii, pt. ii, 1860, 185.— Bd., Eev. Am. Birds, i, 1865, 297.— Cooper, 

 Birds Cal., i, 1870, 106.— Allen, Bui. Mus. Comp. Zool., 1872, 176.— Snow, 

 Birds Kan., 1872, 8. 



Tachymneta bicolor, CouES, Key N. A. Birds, 1872, 113. — Yarrow & Henshaw, Eep. 

 Orn. Specs., 1872, Wheeler's Exped., 1874, 11.— Henshaw, Ah. Lye. Nat. 

 Hist. N.Y., xi, 1874, 4.— Id., An. List Birds Utah, 1872, Wheeler's Exped., 

 1874, 42.— Henshaw, Eep. Oru. Specs., 1873, Wheeler's Exped., 1874, 76.— 

 Allen, Proc. Bost. Soc. Nat. Hist., June, 1874, 29.— Coues, Birds North- 

 west, 1874, 86. 



Found at Fairfield, Utah, early in August, and at Prove in same month. 

 Rather common. 



In Southern Colorado, the species was not uncommon, though perhaps 

 the rarest of the swallows. Here, instead of beitig found near the habi- 

 tations of man, it appeared to seek the solitude of the wild districts, and, in 

 company with the succeeding species, to find a home in the hollows of the 

 trees and deserted Woodpecker's holes. Its presence was not detected at a 

 higher elevation than 8,000 feet. Captain Bendire informs me that this 

 species occurs about Tucson as a summer visitor, and breeds. 



TACHYCINETA THALASSINA (Sw.). 



Violet-green Swallo^v. 



nirundo thalassina, Swains., Phil. Mag., i, 1827, 305 (.Mexico;. — Woodh., Sitgreave's 

 Exp. Zuiii & Col. Eiv., 1854, 64. — Bd., U. S. & Mex. Bound. Snrv., ii, pt. ii, 

 1859, Birds, 11.— Newb., P. E. E. Eep., vi, 1857, 78.— Bd., Ives' Col. Exped., 

 1857-58, pt. iv, 5.— Id., Birds N. A., 1858, 311.— Heerm., P. E. E. Eep., 

 X, pt. ii, 1859, 36. — Bd., Proc. Acad. Nat. Sci. Phila., 1859, 303 (Cape Saint 



