1913] Grinnell-Stcartli: Birds and Mammals of San Jacinto 297 



true color characters of the species. As compared with the better 

 known spring plumage, conspicuous among various species of 

 the family for its general plumbeous tone, the freshly acquired 

 plumage is not so distinctly gray save about the head. The 

 whole dorsum, the outer surface of closed wing, and, more 

 appreciably, the rump and upper tail coverts, are pervaded with 

 a tinge of green ; the sides and flanks have a conspicuous tinge 

 or mixture of primrose yellow; and there is a faint buffy suf- 

 fusion across the chest. All these tints are evidently very much 

 reduced, or obliterated altogether, through the intervening months 

 nf wear and fading, until spring brings the notable gray cast 

 again. 



As far as the records of the species in California show, the 

 gray vireo is only a summer visitant north of the Mexican bound- 

 ary. It is possible that the apparent scarcity of the gray vireo 

 in the San Jacinto region in August was due in part at least 

 to the early departure of individuals, which had thus already 

 inaugurated the autumnal migratory movement. 



Vermivora rubricapilla gutturalis (Ridgway) 



Calaveras Warbler 



Observed only during the migration in the spring, and at 



but one locality. Two were seen at Cabezon, May 7, and one 



of them, an adult female, secured (no. 1769). On May 15 a 



single bird was noted at the same place. 



Vermivora celata lutescens (Ridgway) 

 Lutescent Warbler 



Observed nowhere under circumstances indicative of the 

 breeding of the species in the region explored. In fact, except 

 foi' ;i single migrant observed at Cabezon, May 3, none was 

 seen until after the termination of the nesting season. About 

 July 20 they began to appear in Tahquitz Valley, and during 

 the last week of the month were exceedingly abundant there. 

 They were fairly common on Thomas Mountain. August 16 to 21. 



Fifteen specimens were collected: Tahquitz Valley, fourteen 

 (nos. 2805, 2815-2827). and Thomas Mountain, one (no. 3035). 



