This species was observed and collected at several stations ranging from
2800 feet elevation in San Antonio Canyon, to Blue Ridge at 8200 feet,
and down the desert slope to 6000 feet at Jackson Lake. This
distribution encompasses most of the chaparral and yellow pine forest
associations. Within these areas, however, this bat shows marked habitat
preferences.
Woodland habitats seem to be preferred by _evotis_. At several ponds in
lower San Antonio Canyon this bat was observed repeatedly as it foraged
over the water and coursed low between rows of alders and _Baccharis_.
At Blue Ridge in September, 1951, these bats foraged approximately six
feet above the ground beneath the canopy of coniferous foliage and
between the trunks of the trees.
Most of the bats were taken by stretching fine wires above the surface
of a pond as outlined by Borell (1937:478). Collecting was generally
carried on until at least 11:00 p. m., and the time at which each bat
was taken at the pond was recorded, thereby making possible a rough
estimate of the pre-midnight forage period of each bat commonly
collected at the ponds. Usually bats taken at the start of their
supposed forage period had empty or nearly empty stomachs, whereas those
taken towards the end of their forage period had full or nearly full
stomachs. _M. evotis_ usually first appeared just at dark, well after
the pipistrelles and California myotis had begun foraging. The forage
period of _evotis_ seemed to begin approximately 30 minutes after sunset
and to end approximately two and one-quarter hours later.
Individuals of this species were taken from May 4, to October 14, 1951.
A female taken on May 19, 1951, in San Antonio Canyon, carried one
minute embryo, and one taken in the same locality on June 8, had one
embryo four millimeters in length.
_Specimens examined._--Total, 12, distributed as follows: Los
Angeles County: San Antonio Canyon, 2800 ft., 11; Claremont,
1100 ft., 1 (P.C.).
=Myotis volans interior= Miller