61 
ern Imperial county. This species probably occurs also in the 
foothills of eastern San Diego county. 
Family IGUANIDZE. 
This family of lizards is principally tropical in distribution. 
Many species are very large, some becoming six feet in length; 
our representatives are comparatively insignificant animals. The 
species living in the Desert are able to do without water. 
10. DESERT IGUANA. Dipsosaurus dorsalis. 
Common in parts of the Colorado Desert. Herbivorous. 
11. GRIDIRON-TAILED LIZARD. Callosaurus ventralis. 
Common in the Colorado Desert and in the valleys of the 
eastern slope of the mountains; the food is ants, beetles, grass- 
hoppers, etc. 
12. LEOPARD LIZARD. Crotaphytus wislizeni. 
_ Occasional in the Colorado Desert and on the eastern slope 
of the mountains. The food is leaves, blossoms and insects and 
other lizards. 
13. BAILEY COLLARED LIZARD. Crotaphytus collaris 
baileyi. 
Occasional on the eastern slope of the mountains. The food 
is like that of the preceding species. 
14. CHUCKWALLA. Sauromelas ater. 
Found in rocky localities. Not common in this county, but 
we have specimens from 2,000 feet altitude on the eastern slope 
of the Cuyamaca Mountains. Herbivorous. Harmless. Some- 
times mistaken for the “Gila Monster’, which is not found in 
California. 
15. MEARNS LIZARD. Uta mearnsi. 
Lives among boulders and on the face of cliffs on the eastern 
slope of the mountains. Not common. 
16. DESERT BROWN-SHOULDERED LIZARD. Uta 
stansburiana elegans. 
Generally distributed on the eastern slope of the mountains 
and in the Desert. 
17, SOUTHERN BROWN-SHOULDERED LIZARD. Uta 
stansburiana hesperis. 
This subspecies is common in Southern California from the 
sea to the summit of the mountains. The food is flies, beetles, 
ants, spiders, etc. 
18. LONG-TAILED LIZARD. Uta graciosa. 
Lives in bushes and trees on the eastern slope of the moun- 
tains and in the Desert. Food, insects and leaves. 
19. VAN DENBURGH LIZARD. Sceloporus graciosus 
vandenburghianus. 
Rather common in forests and among rocks in the Laguna. 
Cuyamaca and Palomar Mountains. 
