NORTH AMERICAN BIRDS. 213 



eggs; their sizes being as follows : 24x17.5, 23x17, 23 x 17.5, 23.5 x 

 .17 millimeters.* 



Mr. B. T. Gault on April 23, 1883, obtained a set of six eggs of 

 this species from a cavity in the main trunk of an elder bush or tree in 

 the San Bernardino Valley. Notwithstanding various loud demonstra- 

 tions tapping on the tree trunk and chopping into the cavity with a 

 hatchet the female bird did not leave the nest, and when taken out ap- 

 peared stupefied. The nest was about five and a half feet from the 

 ground, was very near a foot deep and about five inches wide ; the 

 entrance was a little larger than a silver half dollar. The eggs were 

 pretty well advanced in incubation; their sizes are .85X.66, .87X.65, 

 .82 x .64, .85 x . 66, .85 x .66, .84 x .64. f They are of a pearly white. 



398. Dryobates arizonse (HARGITT) [3 6 5-] 



Arizona Woodpecker. I 



Hab. Southern Arizona aud adjacent portion of northwestern Mexico. 



Mr. F. Stephens met with this species in the Santa Rita and 

 Chiricahua Mountains in Southern Arizona. Although the birds were 

 not uncommon he did not succeed in obtaining the eggs. A nest was 

 found May 16 in a sycamore tree which contained young. 



Mr. W. E. D. Scott found this Woodpecker in the oak region of the 

 San Pedro slope of the Cataline Mountains where, except in midwinter, 

 it is not uncommon. Mr. Brown found it common on the Santa Rita 

 Mountains. 



Mr. Scott rarely met with more than two in company ; frequently in 

 the fall a party was seen composed of Arizona Jays, California Wood- 

 peckers, various Titmice and Warblers, and a pair of Strickland's 

 Woodpeckers. They appeared mated late in January or early in Feb- 

 ruary. A nest containing three young, found May 27, was in an oak 

 about ten feet from the ground ; it was much like that of the Hairy 

 Woodpecker, but the opening was a little smaller. I have no descrip- 

 tion of the eggs of this species, but they probably do not differ from 

 those of other Woodpeckers. 



399, Xenopicus albolarvatus (CASS.) [366.] 



White-headed Woodpecker. 



Hab. Pacific coast region, including eastern and western slopes of the Sierra Nevada Mountains, 

 from Washington Territory to Southern California. 



This peculiarly-colored species is common in the pine regions of 

 Washington Territory, Oregon and California. Dr. James C. Merrill, 



* .94 x .69, .91 x .67, .91 x .69, .93 x .67. 



t Bull. No. 2. Ridgway Ornithological Club, April, 1887: Chicago, 111., pp. 78-81. 



I No. 398, A. O. U. Check List, is Dryobates stricklandi Malh, but according to Mr. E. Hargitt, in the 

 " Ibis" for April. 1886, D. stricklandi from Mexico is specifically distinct from the Arizona Woodpecker, 

 which he names Picus arizontz. 



