278 University of California Publications in Zoology [Vou.17 
Distribution—The distribution of this bat cannot be stated with 
confidence without much further field work. It appears to occupy 
a geographic position intermediate between that of M. y. ywmanensis 
and M. y. satwratus, namely the semi-arid Transition and Sonoran 
zones in California west and north of the southeastern deserts. (See 
map, text-fig. J.) 
Specimens Exanined.—Total number 69, from the following local- 
ities in California: Butte County: Chambers Ravine, four miles north 
of Oroville, 1; Glenn County: Winslow, five miles west of Fruto, 1; 
Kern County: Fort Tejon, 61; Buttonwillow, 1 (Calif. Acad. Sei.) ; 
San Bernardino County: Bluff Lake, 7500 feet altitude, 3; Bear 
Lake, 6700 feet altitude, 1; South Fork Santa Ana River, 8500 feet 
altitude, 1. 
Natural History.—July 21 to 25, 1904, J. Grinnell collected sixty- 
one bats of this species in and about the half-ruined buildings of old 
Fort Tejon, Kern County. Of the specimens secured, thirty-three 
proved to be adult females, twelve young females and sixteen young 
males. There were no adult males in the lot taken. Some of the 
young males are equal in length to fully adult males from other 
localities, but their immaturity is attested by the swollen and con- 
spicuous finger joints as well as by the appearance of the pelage. It 
is possible that with the approach of summer the full-grown males 
leave the colony and forage singly at higher elevations. 
An example of this species of bat (no. 6669, Mus. Vert. Zool.) 
was taken at an elevation of 8500 feet on the South Fork of the 
Santa Ana River in the San Bernardino Mountains. This was the 
highest station for any species of bat secured in those mountains. 
J. Grinnell (1908, p. 158) erroneously records the taking of this 
specimen under the name Myotis lucifugus longicrus. 
Myotis yumanensis saturatus Miller 
Miller Bat 
Myotis ywmanensis saturatus Miller (1897b, p. 68). Original description ; 
type locality, Hamilton, Skagit County, Washington. 
Myotis yumanensis saturatus, Stephens (1906, p. 267), part(?). Diagnosis; 
distribution. 
Myotis yumanensis saturatus, J. Grinnell (1913b, p. 277), part. Range 
in California. 
Dagnosis—Similar to Myotis ywmanensis yumanensis and M. y. 
sociabilis, but fur longer, and color darker; general color of back 
bister. 
