THE NATURAL HISTORY SURVEY. 149 



The American Barn Swallow is a common summer resident, 

 arriving the last of April and the first of May and departing 

 early in September. 



The range of the American Barn Swallow covers North 

 America in general, and it breeds from the Fur Countries south- 

 ward to Mexico. It winters in the southern states and tropical 

 America as far south as southern Brazil. 



Genus IRIDOPROCNE Coues, 1878. 



Iridoprocne Tricolor (Vieillot). Tree Swallow. 



Hirnndo bicolor VIEILLOT, Ois. Amer. Sept., I, 1807, 61, pi. 31. 

 Tachycineta bicolor CABANIS, Mus. Hein., I, 1850, 48. 

 Iridoprocne bicolor COUES, Birds Colorado Valley, 1878, 412. 

 Popular synonyms : WHITE-BELLIED SWALLOW. BLACK AND WHITE 

 SWALLOW. GBEEN-BLUE SWALLOW. 



Many years ago the Tree Swallow was reported to be an 

 abundant resident, but now it is certainly a rather rare resident 

 but a common migrant, arriving from the last of March to the 

 middle of April apd departing in September. 



The range of the Tree Swallow covers the whole of temperate 

 North America and it breeds from the table-lands of Mexico 

 northward to the Fur Countries. It winters. in the West Indies, 

 the southern United States and southward through Mexico and 

 Guatemala. 



Genus TACHYCINETA Cabanis, 1850. 



Tachycineta thalassina lepida (Mearns). Violet-green Swallow. 



Hirundo thalassinus of authors, not of SWAINS., Phil. Mag.. I. 1827, 



366. 



Tachycineta thalassina COUES, Birds, N. W., 1874, p. 86 (part). 

 Tachi/cincta lepida MEARNS, Proc. Biol. Soc. Wash., XV, March 5, 



1892, p. 31. 

 Tachycincta thalassina lepida, A. O. U. Com., Auk. XIX, July, 1002. 



p. 325. 



This bird is a distinctly western species, ranging from the 

 eastern base of the Rocky Mountains westward to the Pacific 

 Ocean, and from British Columbia southward, wintering as far 

 south as Costa Rica. A fine male specimen of this Swallow was 

 taken, by Mr. George Clingman, within our limits at South Ken- 

 wood, on May 4, 1897. 



Genus RIP ARIA Forster, 1817. 



Riparia riparia (Linnaeus). Bank Swallow. 



Hirundo riparia LINN^US, S. N., ed. 10, I, 1758, 192. 



