ORDER MICROPODIIFORMES. 177 



south along the Pacific coast to northern California and in the Sierra Nevada 

 south to the San Bernardino Mountains, southern California. In migration to 

 Nicaragua and winters probably in South America. 



Chordeiles acutipennis texensis Lawrence. Texas Nighthawk. [421.] 



Chordeiles texensis Lawrence, Ann. Lye. Nat. Hist. N. Y., VI, 1857, 167. 

 (Texas [ = Rio Grande Valley].) 



Range. — -Breeds in the Lower Austral Zone from north-central California, 

 southern Nevada, southern Utah, and central Texas south to about lat. 30° 

 in Lower California, and to south-central Mexico. Winters from central 

 Mexico to Panama, casually in southeastern Arizona. 



Chordeiles acutipennis inferior Oberholser. San Lucas Nighthawk. [421a.] 



Chordeiles acutipennis inferior Oberholser, Bull. U. S. Nat. Mus., No. 

 86, [April 6] 1914, 109. (Triunfo, Lower California.) 



Range. — Lower California from about lat. 30° south. 



[Additional races of C. acutipennis occur in Central and South America.] 



Order MICROPODIIFORMES. Swifts and 

 Hummingbirds. 



Suborder MICROPODII. Swifts. 



Family MICROPODIDAE. Swifts. 

 Subfamily CHAETURINAE. Spine-tailed Swifts. 



Genus NEPHOECETES Baird. 



Nephoecetes Baird, in Baird, Cassin, and Lawrence, Rep. Expl. and 

 Surv. R. R. Pac, IX, 1858, xvii, xxix [Nephocaetes, 140, 142]. Type, 

 by monotypy, Hirundo nigra Gmelin. 



Nephoecetes niger borealis (Kennerly). Black Swift. [422.] 



Cypselus borealis Kennerly, Proc. Acad. Nat. Sci. Phila., [IX] 1857, sig. 

 14-16, Oct.-Dec. [May 1, 1858], 202. (Simiahmoo Bay, Puget Sound, 

 Washington Territory.) 



Range. — Breeds from southeastern Alaska, Montana(?), and southern 

 Colorado south to southern Mexico. Winters in southern Mexico. [AUied 

 races occur in the West Indies.] 

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