1913] Grinnell-Swarth : Birds and Mammals of Sail Jacinto 211 



from the creek the canon was sparsely brush-covered and strewn 

 with boulders and huge rock piles, being little more than a storm 

 cone up to about 2000 feet, above which altitude it abruptly 

 narrowed. 



The vegetation at this station was more typically that of the 

 desert than it was at Cabezon. Such desert plants as creasote, 

 mesquite and catclaw grew in some profusion, while at the mouth 

 of a canon just south of Snow Creek there was a small bunch of 

 palm trees. The latter afforded our westernmost record station 

 for this plant. Typically desert birds and mammals were also 

 more numerous than they had been found to be a few miles 

 farther up the pass. In Snow Creek Canon above the desert 

 floor Upper Sonoran species extended downwards to the limit 

 of chaparral, as at other points along this slope of the moun- 

 tains. 



Camp was maintained at the mouth of Snow Creek from May 

 2") to June 3. 



Whitewater 



From June 3 to 6 collecting was prosecuted at Whitewater, 

 a station on the railroad about two and a half miles northeast 

 of the mouth of Snow Creek, and at an altitude of 1130 feet. 

 This point is the westernmost extension of the rolling sand-dune- 

 covered country characteristic of the adjacent portion of the 

 Colorado Desert, and here were found such exclusively desert 

 species as Dipodomys d. deserti, Dipodomys m. simiolus and 

 Citi II us I. chlorus. 



San Gorgonio Pass is noted as a region of heavy winds, and 

 Whitewater is exposed to the full force of the gale from the 

 west, more, perhaps, than any other portion of the pass. 



Banning 



Camp was pitched in the San Jacinto foothills about two 

 miles southeast of the town of Banning and at an elevation of 

 2300 feet. The lower parts of the mountains at this point were 

 covered with a dense growth of typical Upper Sonoran chaparral, 

 mostly greasewood, with a good deal of white sage, some poison 

 oak and elder, and a few scattering live oaks. The brush in 



