1918] Grinnell: A Synopsis of the Bats of California 285 
Distribution.—M yotis californicus californicus, as here restricted, 
occupies that portion of California north of about latitude 36 degrees 
and west of the Sierran divides. It appears to inhabit exclusively the 
Upper Sonoran and Transition zones. (See map, text-fig. M.) 
Specimens Examined.—The writer has examined 81 specimens 
(mostly skins with skulls) of M. c. californicus from the following 
localities in California: Mendocino County: Laytonville, 1; Sherwood, 
10 (Calif. Acad. Sei., 9; Mus. Vert. Zool., 1) ; Willits, 1; Mt. Sanhed- 
rin, 5 (Acad. Nat. Sci. Phila.) ; 3 miles west Mt. Sanhedrin, 1; Glenn 
County : Winslow, 1; Sonoma County : near Cazadero, 3; near Guerne- 
ville, 2; Colusa County: Snow Mt., 1 (Stanford Univ.) ; Solano 
County: near Vacaville, 3; Contra Costa County: near Walnut 
Creek, 4; Monterey County: Monterey, 5; Placer County: Blue 
Canon, 1; Dutch Flat, 2; Eldorado County: Fyffe, 28; Limekiln, 1; 
Michigan Bluff, 2; Placerville, 1 (Stanford Univ.) ; Mariposa County : 
Yosemite Valley, 2; El Portal, 2; Pleasant Valley, 4; Coulterville, 1. 
Natural History—When overtaken by a storm in the Yosemite 
Valley on May 30, 1911, the writer sought refuge in a rocky cavern. 
A tiny fire was built for comfort and in a few moments a little Cali- 
fornia bat dropped from a erevice in the roof, evidently overcome 
by the smoke. The specimen proved to be an adult male and is now 
no. 12981 (Mus. Vert. Zool.). 
A female (no. 18487, Mus. Vert. Zool.), with mammae functional, 
was taken July 2, 1912, three miles west of Vacaville, Solano County. 
Among a series of twenty-eight little California bats in the 
Museum of Vertebrate Zoology, secured by Joseph Dixon at Fyffe, 
Eldorado County, during the latter part of July, 1916, there are 
adults and young of both sexes. The young are nearly full-grown 
and vary in weight from 2.8 grams to 3.1 grams. The largest of the 
adult males has a length of 80 millimeters and weighs 3.7 grams, while 
among the females the greatest length is 80 millimeters, with a weight 
of 5 grams. 
Myotis californicus quercinus II. W. Grinnell 
Oak Foliage Bat 
Myotis californicus, Elliot (1904a, p. 319), part. Occurrence at Fort Tejon 
and Mt. Whitney, California. 
Myotis califernicus, Elliot (1907, pp. 502-503), part. Mt. Whitney and 
Fort Tejon. 
Myotis californicus, J. Grinnell (1908, p. 158). Occurrence in the San 
Bernardino Mountains. 
