326 Henshaw on Birds observed in New Mexico. [October 



eighth inches. The exterior depth is two inches and a quarter 

 and the interior depth one inch and three quarters. 



The nest of June 6, which will complete the present series, 

 was found in a locality similar to the nest first described, at an 

 altitude of 3000 feet. It was built in a 'catclaw' — a kind of small 

 mesquite— four feet from the ground. The situation was at the 

 extremity of a branch in a horizontal V-shaped fork, to which 

 two-thirds of the rim is fastened, the other third being free. But 

 considerable support was afforded, directly underneath the nest, 

 by a small twig, which is fastened into the structure. The ma- 

 terials do not vary from those of the first nest of June 2 already 

 described, either inside or out, except that a few downy feathers 

 are added to the lining. The whole is a symmetrical half-sphere 

 in shape. External diameter, two and three-fourths inches ; in- 

 terior diameter, two and one-fourth inches. Exterior depth, two 

 inches ; interior depth, one inch and three-quarters. It contained 

 three slightly incubated eggs, which do not vary in color from 

 those already described, except that the spots are of a slightly 

 redder brown, and they are more concentrated at the larger end. 

 The eggs are rather smaller and even more rounded in general 

 shape than the other set spoken of, being but little more pointed 

 at one end than at the other. They measure .72 X .53, .70 X .55, 

 and .68 X .53 inches, respectively. 



My series of this species at present numbers fifty-four speci- 

 mens — forty-two males and twelve females — all taken, with the 

 one exception noted above, between Apiil 1 and June 11 of the 

 present year. They pi-esent very little variation in size or color, 

 and the young in first plumage do not differ materially from the 

 adult birds. 



LIST OF BIRDS OBSERVED IN SUMMER AND 



FALL ON THE UPPER PECOS RIVER, 



NEW MEXICO. 



BY H. W. HENSHAW. 



The observations embodied in the following list were made 

 during the interval between July 18 and October 28, 1SS3, by 



