i68 Field Museum of Natural History — Zoology, Vol. IX. 



Family CAPRIMULGID^. Nighthawks, 

 Whip-poor-wills, etc. 



Feet, small and weak ; mouth, very large ; bill, small ; middle toe 

 nail, with fine comb-like edge ; front toes, connected at base. 



A band of white on the wing; tail feathers, not tipped with white. 



Chordeiles virginianus, and races. 

 Nighthawk. 

 See Nos. 200, 200a. 



No white on the wing; primaries, banded with rufous brown 

 and black; wing, over 7.50 in. long. Antrostomus carolinensis. 



Chuck-will's-widow. 

 See No. 198. 



No white on wing; outer tail feathers, 

 broadly tipped with white; wing, under 7.50 

 in. long. Antrostomus vociferus. 



Whip-poor-will. 



See No. 199. 



