156 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH SER. 
Snake River, Salmon Falls, Aug. 9, 1894; between Blue Lake 
and Shoshone Falls (on upland), Aug. 13, 1894; plains 
between Bliss and Snake River, Aug. 10, 1894; plains north of 
Snake River, between Upper Salmon Falls and Bliss, Aug. 10, 
1894: plains across river from Glen’s Ferry, Aug. 8, 1894; 
Snake River shore at Upper Salmon Falls, Aug. 10, 1894; 
near Cottonwood Creek, Cassia Co., Aug. 23, 1894; and Glen’s 
Ferry, Aug. 8, 1894. 
3. Uta stansburiana B. & G.—This wide ranging species was 
found, in Idaho, between Blue Lakes and Shoshone Falls, Aug. 
13, 1894; on the plains between Bliss and Snake River, Aug. 
10, 1894; sage-brush plains between Shoshone and Blue Lakes, 
Logan County, Aug. 12, 1894; south side of the cafion between 
Shoshone Falls and Twin Falls, Snake River, Aug. 15, 1894. 
4. Sceloporus occidentalis B. & G.—A single specimen of 
this lizard was obtained near Cottage Grove, Lane County, 
Oregon, June 27, 1894. 
5. Sceloporus biseriatus Hallowell—I have been unable to 
detect any difference between specimens of this lizard from 
southern California and the sixteen which were collected in 
Idaho, at Blue Lakes Cafion, Aug. 13, 1894; on sage-brush 
plains between Shoshone and Blue Lakes, Aug. 12, 1894; on 
the cafion walls at Shoshone Falls north of ferry, and at 
Blue Lakes, Aug. 16, 1894; and between Blue Lakes and 
Shoshone Falls, Aug. 13, 1894. 
6. Sceloporus graciosus B. & G.—The numerous specimens 
from Idaho fall well within the known variation of this species, 
both as regards coloration and scale characters. ‘They were 
collected on the plains between Bliss and Snake River, Aug. 10, 
1894; plains across river from Glen’s Ferry, Aug. 8, 1894; 
sage-plains near Conant, Raft River, Cassia Co., Aug. 21, 
1894; sage-plains between Shoshone and Blue Lakes, Aug. 12, 
1894: Blue Lakes Cafion, Logan Co., Aug. 13, 1894; and at 
Weiser, Washington Co., Aug. 6, 1894. The species was 
found also at Kelso, Cowlitz County, Washington, March 23, 
1894. 
7. Phrynosoma douglassii (Bell).—A very noticeable differ- 
ence in color between this and the following species is the 
indistinctness, in P. douwglassi, of the dark nuchal blotches, 
which are so clear and well-defined in P. platyrhinos. In 
