1913] Grinnell—Swarth : Birds and Mammals of San Jacinto 273 



ingly seems possible thai they were breeding there. The species 

 is known to breed in similar situations in certain Upper Sonoran 

 valleys west of the mountains. 



Twenty-eight specimens were collected, as follows: Round Val- 

 ley, one (no, 2200), Tahquitz Valley, two (nos. 2847, 2848), 

 Strawberry Valley, nine 'nos. 2666-2674), Fuller's Mill, three 

 (nos. 1891 1893), Schain's Ranch, four (nos. 1908-1911), Ilemet 

 Lake, five (nos. 2966 2970), Thomas Mountain, one (no. 3030), 

 Garnet Queen Mine, one (no. 2433). Toro Peak, two (nos. 2431. 

 2432). 



One partial albino was secured: no. 2969, 5 J uv -- Hemet Lake, 

 August 14. It is in the juvenal plumage, hut with the following 

 areas pure white: rump, upper tail coverts and all but two of the 

 rectrices, most of the primaries, and the primary coverts of each 

 wing, almost the entire under surface of the body, and some 

 feathers on the nape. Some of the dusky juvenal streakings are 

 present on the sides of the breast. 



Spizella breweri Cassin 

 Brewer Sparrow 



At the end of May and during June this species was fairly 

 common in the sagebrush of Hemet Valley. It was observed by 

 us at Thomas Valley. Kenworthy, and nearly to Vandeventer 

 Flat, and was undoubtedly breeding throughout this region. At 

 Cabezon, early in May, small Mocks of Brewer sparrows were 

 seen on several occasions, apparently migrating. They were 

 found nesting nowhere on the desert slopes of the mountains. 

 Fairly common in the chaparral at Vallevista, August 2!) to 

 September 5. 



Five specimens were collected, two at Cabezon (nos. 1634, 

 1635). and three at Vallevista (nos. 3118-3120). 



Spizella atrogularis (Cabanis) 



Black-chinned Sparrow 



A common species on the northern and western slopes of the 

 mountains, but not encountered at any point on the desert side. 



