1908] Grinnell.—Biota of the San Bernardino Mountains. 143 
Total length Tail vertebrae Hind foot 
( Average 256 78 40 
21 66 Greatest 278 94 43 
Least 225 47 37 
( Average 249 78 38 
36 2 @ Greatest 271 90 42 
( Least 235 54 35 
Otospermophilus beecheyi fisheri (Merriam). 
Fisher Ground Squirrel. 
Ground squirrels proved more or less common over a surpris- 
ingly large extent of the region under consideration. They 
ranged from the Lower Sonoran zone, at both bases of the moun- 
tains, well up through the Transition zone. Along the whole 
length of the Santa Ana, from the wash near Mentone up to Big 
Meadows, 6800 feet altitude, they were represented in fair num- 
bers. After the middle of July, when families of half-grown 
young were abroad foraging for themselves, they became espe- 
cially noticeable. It did not take them long to discover a camp, 
which they stealthily visited to carry away cheek-pouches bulging 
full of scraps of various sorts. We often caught them in our 
larger mammal traps baited with meat. 
To enumerate localities of occurrence, we found ground squir- 
rels around the mouth of Foresee creek, and near Seven Oaks; at 
the mouths of Fish creek and South Fork; on the big meadow at 
Bluff lake, 7500 feet, where their large burrows and mounds of 
earth interfered considerably with pasturage; in Bear valley and 
at the north base of Sugarloaf; in Holeomb valley, at Saragossa 
springs, and around Doble; at Cactus Flat; and finally on the 
desert itself close about Cushenbury springs. 
The eight specimens preserved show a general paleness of 
coloration, as compared with examples from the Santa Cruz sub- 
faunal area. On this account I am putting them under the race- 
name fisheri. 
Onychomys torridus (Coues). Arizona Grasshopper Mouse. 
We found this species only at Cushenbury springs, at the 
desert base of the mountains. Here an adult male (No. 1404) 
and an immature female (No. 1414) were trapped August 11 and 
12, 1905, on a sandy place on the desert. 
