322 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Genus SIALIA Swainson. 



Sialia Swains. Phil. Mag. I. May, 1827, 369. Ty^e, Motacilla 

 sialis Linn. 



766. Sialia sialis (Linn.). 



Bluebird. 



Motacilla sialis Linn. S. N. ed. 10, I. 1758, 187. 

 Sialia sialis Haldem. Trego's Geog. Penn. 1843, 77. 



[B 158, C 16, R 22, C 27.] 



Geog. Dist. — Eastern United States to the eastern base of the 

 Rocky Mountains, north to Manitoba, Ontario, and Nova Scotia, 

 south, in winter, from the Middle States to the Gulf States and Cuba. 

 Bermuda, resident. 



766^. Sialia sialis azurea (Swains.). 



Azure Bluebird. 



Sialia azurea Baird, Rev. Am. B. July, 1884, 62. 

 Sialia sialis Y2iX. azurea B. B. & R. Hist. N. Am. B. I. Jan. 1874, 

 62. 



[B— , C— , R- C— .] 

 Geog. Dist. — Southern Arizona and eastern Mexico. 



767. Sialia mexicana occidentalis (Towns.). 



Western Bluebird. 



Sialia occidentalis Towns. Journ. Acad. Nat. Sci. Phila. VII. 



1837, 188. 

 Sialia mexicana occidentalis Ridgw. Auk, XI. April, 1894, 151, 



154. 



[B i^(),part, C If ^ part, R 27,^ part, C 2^,part.'\ 



Geog. Dist. — Pacific coast, from British Columbia to southern 

 California, east to western Nevada, and casually, during migrations, 

 to New Mexico. 



