ORDER MACROCHIRES. 199 
RanGE.— North and South America. Breeds from southeastern British 
Columbia, Alberta, and southwestern Saskatchewan south to southern Texas 
and mountains of northern Mexico; winters in South America. 
c. Chordeiles virginianus chapmani Cours. Florida Nighthawk. [420).] 
Chordiles popetue chapmani Cours, Auk, V, Jan., 1888, 37. (Gaines- 
ville, Florida.) 
RanceE.— Breeds in the Gulf coast belt from eastern Texas to Florida; 
winter range unknown. 
d. Chordeiles virginianus sénnetti Couns. Sennett’s Nighthawk. ([420c.] 
Chordiles popetue sennettt Couns, Auk, V, Jan., 1888, 37. (50 miles 
west of Pembina, North Dakota.) 
RanGE.— Breeds on treeless plains from Saskatchewan and Manitoba south 
to central Nebraska; in migration to Texas; occasional in Iowa, Wisconsin, 
and Illinois; winter range unknown, probably in South America. 
e. Chordeiles virginianus hésperisGrinnetu. Pacific Nighthawk. [420d.] 
Chordetles virginianus hesperis GRINNELL, Condor, VII, 1905, 170. (Bear 
Lake, 6700 feet, San Bernardino Mountains, California.) 
RaNnGE.— Breeds from southwestern British Columbia south along the coast 
to northern California and in the Sierra Nevada south to the San Bernardino 
Mountains, southern California; winter home unknown. 
Chordeiles acutipénnis (BoDDAERT). 
RanGeE.— California, Utah, and Texas south through the greater 
part of South America. 
a. [Chordeiles acutipennis acutipennis. Extralimital.] 
b. Chordeiles acutipennis texénsis Lawrence. Texas Nighthawk. [421.] 
Chordeiles texensis LAWRENCE, Ann. Lyc. N. H. N. Y., VI, 1857, 167. 
(Rio Grande, Texas.) 
Rance.— Breeds in Lower Sonoran Zone from central California, southern 
Nevada, southern Utah, and southern Texas south to Cape San Lucas and 
southern Mexico; winters south of the United States to Panama. 
