EGGS OF NORTH AMERICAN BIRDS. 77 



418. Breeds in California. See Ridgway in " Manual of 

 North American Birds," 1887, page 688 in foot-note. 



419. Parauqui:, Nyctidromus albicollis nierrUK. Eggs, 2, 

 elliptical, white or creamy, spotted, blotched, and dotted with 

 pale drab, lilac, and lavender ; .80 -j- 1.10 to .85 -f- 1.15. Breeds 

 in the valley of the Lower Rio Grande, south through Central 

 and most of South America, in North America in May. 



420. NiGHTHAWK, Chordelies virginianus. (Type, Plate 

 VI.) Eggs, 2, elliptical, grayish white, spotted and blotclied 

 irregularly with brown, drab, and lilac; .80 -f- 1.20 to .85 -f- 

 1.25. In Northern and Eastern North America, east of the 

 Great Plains, exclusive of Florida, m May. 



420a. Western Nighthawk, Chordelies virginianus hen- 

 ryi. Eggs, indistinguishable from those of No. 420. Breeds 

 in Western United States, from the plains to the Pacific 

 coast, in May. 



4205. Florida Nighthawk, Chordelies virginiayms chap- 

 mani. Eggs, varying from decidedly elliptical to oval or 

 rounded elliptical, but do not differ in color from those of 

 No. 420. The eggs of the last three numbers are, however, 

 often finely and uniformly spotted over the entire surface ; 

 .75 -|- 1.10 to .80 -\- 1.15. Breeds in Florida, and probably 

 as far north as the Carolinas, in May. I have decided to 

 give the form of Nighthawk which occurs in Florida the 

 name used above, for the birds found breeding there are cer- 

 tainly not the Cuban Nighthawk. Four years ago, upon 

 examining some Nighthawks from Florida, I had some doubts 

 as to the identity of this form with the Cuban (See Quarterly 

 Journal Boston Zoological Society, July, 1883, p. 44), and a 

 familiarity with the Cuban Nighthawk, acquired since then, 

 together with an opportunity of exainining a very large series 

 of birds from Florida, has confirmed these doubts. This new 

 Nighthawk may be briefly described as follows, but a more 

 detailed description may be found in my " Birds of Eastern 

 North America," second revised edition. 



Chordelies virginianus chapmani. Colors averaging darker 



