1908] Grinnell—Biota of the San Bernardino Mountains. 163 
seen in the black oak belt (Transition zone) south of the Santa 
Ana towards San Gorgonio peak, up to an elevation of 7000 feet. 
T saw one as high as 7500 feet, July 9, 1907, making its way to a 
hiding place among the fallen leaves beneath a grove of aspens; 
and this I should judge to have been fairly within the lower 
division (Canadian) of the Boreal zone. The species was found 
nowhere on the desert slope of the mountains. 
Cnemidophorus stejnegeri Van Denburgh. 
Stejneger Whip-tailed Lizard. 
Whip-tailed lizards were detected only on the Pacifie side of 
the mountains where they ranged no higher than the Upper 
Sonoran zone. We saw many of them along the lower Santa Ana 
canon June 11, 1905; and June 12 several were noted as high as 
4500 feet alone the road through the scrub oak and greasewood 
belt between lower Bear ereek and Clarke’s ranch. I saw one 
at about 4000 feet altitude on a sunny slope near the mouth of 
Mountain Home creek, June 22, 1907. The highest I saw the 
species was about 5500 feet altitude on the north wall of the 
upper Santa Ana near our Cedar Cabin camp. I ‘‘auxed’’ one 
there July 26, 1907. The specimen had not quite completed a 
moult. It was 1314 inches lone. 
Eumeces skiltonianus (Baird & Girard). Western Skink. 
The Western skink was met with quite often about the upper 
Santa Ana and its tributaries, altogether in the lower Transition 
zone. While turning over rocks or rummaging about wood-rats’ 
nests, individuals were usually met with, though not nearly as 
often caught. During the rainy month of July, 1906, several 
were seen shortly after showers squirming swiftly to cover be- 
tween brushy or rocky places. Five examples secured seem to 
be in no ways different from specimens obtained elsewhere in 
California. 
Eumeces gilberti Van Denburgh. Red-headed Skink. 
This smooth-scaled lizard was met with but once, in the lower 
Santa Ana canon, where I ‘‘auxed’’ one at about 2000 feet al- 
titude, June 11, 1905. The animal was runnine rapidly across 
an open space over the hot rocks and sand. 
