THE Willi' I'OOK-W ILL. 151 



handsome eggfi as those of Chuck-will's-widow, ami tlicy are generally nuich 

 lighter colored. 



The average^ measm-cment of thirty-three specimens in the United States 

 National Museum collection is 29.13 by 21.29 millimetres, or al)out 1.15 by 0..S4 

 inches. The largest egg of the series measures 30.48 by 22.86 millimetres, or 

 1.20 by 0.90 inches; the smallest, 27.68 by 20.57 millimetres, or 1.09 by O.Sl 

 inches. 



The type specimen, No. 18256 (PI. 1, Fig. 10), from a set of two, was 

 taken by ]\lr. Robert Ridgway, near Wheatland, Indiana, in May, 1888, and 

 -represents one of the better-marked eggs of this species; No. 20450 (PL 1, 

 Fig. 11), from the Bendire collection, also from a, set of tw<>, was taken on 

 June 9, 18S7, at (Dwings Mills, Baltimore County, Maryland, and shows one <>f 

 the lighter-marked s})ecimens. 



53. Antrostomus vociferus macromystax (Wagleb). 



STETHENS'S WHIP-POOR-WILL. 



Caprinnihins macromi/.it<(.r Wagler, Ibis, 1831, 533. 

 Vai)rimt(lijii,s roci/erHH macromijKtnx Uabtert, Ibis, 1892, 286. 



("b _, C — , E — , C 881, TT ilia.) 



Geographical range : From Guatemala, Central America, north over tbe Mexican 

 table-Iuuds to soutliwestern New Mexico and soutbern Arizona. 



Stephens's Whip-poor-will, a somewhat larger subspecies than its eastern 

 relative, was hrst described l)y Mr. William Brewster, in the "liulletin of the 

 Nuttall Ornithological Club" (Vol. VI, 1881, pp. 69-72), from a specimen 

 obtained l)v Mr. F. Stephens, who hrst met with it in the Chiricahua Mountains, 

 Arizona, on May 2, 1880. Subsequently he found it also in the Santa Rita 

 Mountains, in 1881, where it Avas, however, less numerous than in the former 

 range the year previous. In speaking of Stephens's Whi})-poor-will, Mr. Brew- 

 ster says, on page 71: "In the Chiricahua Mountains it is apparently not 

 uncommon, to judge from the following notes which acciMnpaiiicd my specimen: 

 'I have heard several of these Whip-poor-wills singing at one time, and am 

 told that they were heard here last year. I hear P. iii(ff<i/li every evening. 

 They keep high up the mountain side, while this Whip-])oor-will affects the 

 lower part of the canyons.' * * * 



"In a recent letter J\Ir. Stephens adds: 'I heard the iirst Whip-poor-will 

 about the middle of May. By Jmie 1 they were as connnon as I ever knew 

 them to be in the East; sometimes I could hear three or four whistling at once; 

 they were yery restless and rather shy, so I got only the specimen 1 sent you, 

 and a female shot in the daytime. The latter flew off her nest, which, as usual, 

 was only a very slight depression in the ground, but in this case was overhung 

 l)y a rock. Tlie single L'gg (now before me) is plain wliite, with very faint 

 In-ownish spots, so faint that one would hardly notice them. Slie woulil have 

 laid no more; this was on July 4, 1880.'" 



