172 CHECK-LIST OF NORTH AMERICAN BIRDS. 
[B 108, C 270, R 350, C 404. ] 
Groc. Dist.— Rocky Mountain region (Colorado), west to the 
Pacific coast; north to British Columbia, and south to Lower Cali- 
fornia, Mexico, Costa Rica, and the West Indies. 
Genus CHAITURA STEPHENS. 
Chetura STEPH. Gen. Zool. XIII. pt. ii. 1825, 76. Type, Azrundo 
pelagica LINN. 
423. Cheetura pelagica (Linn.). 
Chimney Swift. 
Lirundo pelagica Linn. S.N. ed. 10, I. 1758, 192. 
Chetura pelasgia STEPH. Gen. Zool. XIII. pt. 11. 1825, 76. 
[B,2o0,(Cie7t, Rist, gon) 
Geroc. Dist.— Eastern North America, north to Labrador and the 
Fur Countries, west to the Plains, and passing south of the United 
States in winter at least to Jalapa, Mexico, and Cozumel Island. 
424, Cheetura vauxii (Towns.). 
Vaux’s Swift. 
Cypselus vauxit Towns. Journ. Ac. Nat. Sci. Phila. VIII. 1839, 
148. 
Chetura vauxit DEKay, Zool. N.Y. II. 1844, 36. 
[ Bro, C 242) BR 352) C)406.] 
Geroc. Dist.— Pacific coast of the United States northward to 
British Columbia; migrating south in winter to Lower California and 
Mexico. 
SuBFAMILY MICROPODINZA. Typicat Swirts. 
Genus ABRONAUTES Hartert. 
Aéronautes HARTERT, Cat. Birds Brit. Mus. XVI, 1892, 459. 
Type, Cypselus melanoleucus BAIRD. 
