47 
36. LONG-EARED BRUSH RAT. Neotoma fuscipes macrotis. 
Common in brush from the summit of the mountains to the 
seacoast. 
Searcely or not injurious. 
37. INTERMEDIATE BRUSH RAT. Neotoma intermedia. 
Cholla cactus thickets in foothills and west to the sea. 
38. YELLOW BRUSH RAT. Neotoma intermedia gilva. 
Cactus thickets of the foothills bordering the desert. 
39. MESQUITE BRUSH RAT. Neotoma albigula venusta. 
Colorado Desert and bordering foothills. Frequents mesquite 
brush, 
40. SOUTHERN CALIFORNIA MEADOW MOUSE. 
Microtus californicus neglectus. 
Abundant in grassy localities in the mountains and west to 
the seacoast. 
Family GEOMYIDA®, Pocket Gophers. 
The food is vegetable, principally roots and tubers. Stems 
of plants are also cut off and drawn into the runs. Worms and 
insects found in the runs are also eaten. Pocket Gophers are 
quite injurious in cultivated land, especially in fruit orchards. 
They are easily trapped. Poison and bi-sulphide of carbon are 
often used in the runs and are moderately effective. 
41. TAWNY POCKET GOPHER. Thomomys nigricans. 
Abundant in the mountains, 
42, SOUTHERN POCKET GOPHER. Thomomys bottz 
pallescens. : 
Abundant in the foothills and west to the seacoast. 
43, IMPERIAL VALLEY POCKET GOPHER, Thomomys 
perpallidus albatus. 
Colorado Desert and bordering foothills. Not common in 
many places. 
Family HETEROMYIDAEZ. Pocket Rats and Pocket Mice. 
Differ from common rats and mice in having pockets in the 
sides of the neck similar to those of pocket gophers. Sometimes 
destructive, but not often abundant in cultivated land. Noc- 
turnal. The food is principally seeds. Often called Kangaroo 
Rats. 
45. DULZURA POCKET RATS. Dipodomys streatori 
simulans. 
Western slope of the mountains. Not common. 
46. BIG DESERT POCKET RAT. Dipodomys deserti. 
Common in parts of the Colorado Desert and in the border- 
ing foothills. Usually found in small colonies. 
47. MIMIC POCKET RAT. Dipodomys merriami simiolus. 
Abundant in the valleys of the eastern slope of the mountains 
and in the Colorado Desert. 
