1873.] 107 [Brewer. 



borealis that I have ever seen. It is common to regard the montanus 

 and the borealis as races of the same species. Without entering into 

 the merits of this question, I may note that their eggs do not favor 

 this supposition. 



Asturina plagiata. Gray Hawk. 



The meeting with the nest and eggs of this rare hawk was one of 

 the most important and interesting of his discoveries. The nest was 

 found June 6th, and was slightly built of sticks and strips of bark. 

 It was in a low tree on the banks of Reledo Creek, near Tucson, 

 Arizona. The egg is of a rounded oval shape, quite tapering at one 

 end, and rounded at the other. It is of a uniform bluish-white color, 

 and unspotted. The egg measures 2 inches in length by 1.60 

 inches in breadth. 



Pyrocephalus mexieanns. Red Flycatcher. 



The nest and eggs of this species were first obtained in Mexico by 

 Mr. John Xantus, and two specimens of the latter are in the collec- 

 tion of the Society. No description of them has, however, been 

 made public. Capt. Bendire found them quite abundant in southern 

 Arizona. They were found breeding as early as April. They were 

 most common in the neighborhood of Reledo Creek, near Tucson, 

 and were generally found in the vicinity of water. Their nests were 

 found in various situations. In one instance it was in a cotton-wood 

 tree, thirty feet from the ground. In other instances, in the fork of 

 a mesquite not more than ten feet above the ground. The nests 

 were small, slight and loosely constructed, and not readily preserved, 

 made externally of twigs, fine bark, stems of plants, etc., and lined 

 with hair and feathers. The usual number of eggs was three, never 

 more. These bear a close resemblance, except in size, to the eggs of 

 Milvulus forfcatus. Their ground is a rich cream color, to which 

 their deep purplish brown markings seem to give a slight tinge of 

 red. The markings are few, bold and conspicuous, and encircle the 

 larger end with an almost continuous ring. In shape they are of a 

 roundish oval, and measure .66 of an inch in length by .55 of an inch 

 in breadth. 



Helminthophaga luciB3. Arizona Warbler. 



The discovery of the nest and eggs of this new warbler is also an 

 interesting addition to zoological knowledge. This warbler was first 

 discovered and described by Dr. Cooper, in 1862, and is not included 

 in Prof. Baird's Pacific Railroad Report. Nothing was known of its 

 breeding habits until discovered by Capt. Bendire. His first nest was 



