Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
10/1/25
44
Dog bats. It is quite obvious that this
name has been derived from their
dog like habit of [illegible] laying back
their ears and persistently backing
away when one approaches. Their
relatively large black eyes are
quite prominent. Thus hanging
by their feet, braced with their foream,
their ears, back and the hinderpart
of their body pressed closely against
the rock or wall to which they are
clinging they are not nearly so
conspicuous as a bat hanging head
down. I should think a better name
would be puppy bats or fox terrier bat.
I placed small pieces of cotton in
the sacs on the membrane [illegible] to make them
stand out more prominent. These
little sacs are quite obviously glands
for when I caught males (only males
care the sacs on the female they are rudimentary)
the sac and membrane near it were
moistened, but the sac was so small
I could detect no odour. When
flying these bats made a peculiar
metallic sound like one that
could be made by a loosely threaded
cable of wires of some rich metallic
substance or freshly cut iron. I
was unable to discover how the
sound was made. I believe the
net system is a very efficient
way of taking bats, for after catching
a large bunch I turned them loose
in a closed room and picked the
specimens I wanted as well as studied
their habits. At dusk I turned them loose.