Specimens examined.—Los Angeles County: 2 mi. NE San Dimas, 1200 ft., 4.
Eumops perotis californicus (Merriam)
Mastiff Bat
H. W. Grinnell (1918:373) mentioned individuals collected at Sierra Madre (at the coastal base of the San Gabriels west of the study area), and Sanborn (1932:351) reported specimens from Covina and Azusa. Probably this bat occurs locally all along the coastal base of the range.
Family LEPORIDAE
Lepus californicus bennettii Gray
California Jack Rabbit
This species was found in the coastal sage belt from Cajon Wash west to San Gabriel Canyon and was most plentiful in thin stands of sagebrush, and in and around citrus groves. Because of their preference for semi-open country, jack rabbits are absent from much of the coastal belt of sagebrush where the brush is fairly continuous, and they never were observed in the chaparral association.
Coyotes catch many jack rabbits and regularly forage around the foothill borders of the citrus groves for cottontails and jack rabbits.
A female examined on February 19, 1951, was pregnant, and one taken on March 15, 1951, carried three small embryos.