yotis thysanodes_, _Myotis subulatus_, _Eptesicus fuscus_,
and _Plecotus townsendii_. A piece of mist net attached to an aluminum
hoop-net two and one half feet in diameter was used to good advantage in
capturing bats rebounding from the larger mist net, and in frightening
bats into the larger net when they approached closely. An adult male
(69249) was shot at 7:20 p.m. while flying six to eight feet from the
ground between pinyon trees up to 20 feet high; the air temperature was
70 deg. F. A female (69251) was found seemingly exhausted on the floor in
the museum at Park Headquarters in the daytime, and was immature as
indicated by small size, open basicranial sutures, unworn teeth, weakly
ossified zygoma, and open epiphyseal sutures of phalanges.

Myotis subulatus melanorhinus (Merriam) Small-footed Myotis

_Specimens examined._--Total, 8: Rock Springs, 7400 ft., 69242,
69244, 69245, 69247, 69248, August 21 to 23, 1956; Hospital, Park
Headquarters, MV 7886/507, [Male], July 12, 1939; Headquarters,
MV 7877/507, [Female], August 30, 1938; 4504 Denver Museum,
within the Park (exact locality not recorded), R.L. Landberg, July
27, 1931.

The specimens from Rock Springs are two adult males that were shot, and
one adult male, one adult female, and one young male that were netted
at the place described in the account of _Myotis evotis_. The three
adult males are near the average color of _M. s. melanorhinus_, and
distinctly darker than the _Myotis californicus_ from the Mesa Verde. In
the female the pelage is paler and brighter, and the ears and membranes
are darker, than in _M. californicus_.

Myotis thysanodes thysanodes Miller Fringed Myotis

_Specimen_: Rock Springs, 7400 ft., 69250, ad. [Female], August
23, 1956; taken in net as noted in account of _Myotis evotis_.

Myotis volans interior Miller Long-legged Myotis

_Specimen_: Rock Springs, 7400 ft., 69252, ad. [Female], August
21, 1956; shot over road.

Eptesicus fuscus pallidus Young Big Brown Bat

_Specimen_: Rock Springs, 7400 ft., 69253, ad. [Female], August
23, 1956; taken in net as noted in account of _Myotis evotis_.

Plecotus townsendii pallescens (Miller) Townsend's Big-eared Bat

_Specimens examined._--Total, 5: Rock Springs, 7400 ft., 69254, ad.
[Female], non-pregnant, August 23, 1956; Square Tower House,
6700 ft., 69255-69258, March, 1955.

The specimen from Rock