Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Mayhew
1963
Journal
36.
Aug. 21 Glamis area, Imperial Co., Calif.
in mud, the other dug in in a
sandy spot in the shade of the
bank. Both spots were still quite
moist. They were allowed 2 hours
in which to get located; then they
were dug out. The one in mud was
approximately 4 inches beneath the
surface. It had made a chamber
lateral to its point of entrance.
The second animal had simply dug
down approximately 2'1/2 inches beneath
the sand surface. It had made no
attempt to form a chamber.
The wash in which these amphibians
were found was rather thickly covered
with vegetation (at least, the banks
were). Ironwood and palo verde (Cercidium
flavidum) were the dominant plants.
These plants provided considerable
shade; so amphibians could survive
quite nicely dug in beneath them.
Vegetation was quite sparse a
short distance from the banks of
the wash, however. It appeared
these animals would be restricted
to the washes, and would be
unable to travel any distance over
the intervening terrain.
During the afternoon we made