PASSEEES— HIEUNDINIDAE— TACHYCINETA THALASSINA. 217 



TACHYCINETA BICOLOE (Vieill.). 

 'White-bellied Swallow. 



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

 Exp. Zurii & Col. Eiv., 1854, G5.— Bd., U. S. & Mex. Bound. Suit., 

 ii, pt. ii, 1854, Birds, 11.— Newb., P. E. E. Rep., vi, 1857, 78.— Bd., Birds 

 N. A., 1858, 310.— Xanttjs, Proc. Acad. Nat, Sci. Pbila., 1859, 191 (Fort 

 Tejon, Cal.). — Heerm., P. E. B, Eep., x, pt. iv, 1S59, 36. — Henry, Proc. 

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

 Eep., xii, pt. ii, i860, 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. 



Tachycineta bicolor, Coues, Key N. A. Birds, 1872, 113. — Yarrow & Henshaw, Rep. 

 Orn. Specs., 1872, Wheeler's Exped., 1874, 11.— Henshaw, An. 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 Provo in same month. 

 Rather common. 



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

 the rarest of the swallows. Here, instead of being 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 Ben dire informs me that this 

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



No. 



Sex. 



Locality. 



Date. 



Collector. 



Wing. 



Tail. 



Bill. 



Tarsus. 



83 



9 ad. 





July 1, 1S73 



Dr 



T.T. Rothrock 



4-55 



2.50 



0.25 



0.47 



TACHYCINETA THALASSINA (Sw.). 



Violet-green Swallow. 



Hirundo thalassina, Swains., Phil. Mag., i, 1827, 365 (Mexico;. — Woodh., Sitgreave's 

 Exp. Zuni & Col. Eiv., 1854, 64.— Bd., U. S. & Mex. Bound. Surv., 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 



