half smaller. Middle inner upper incisors
considerably worn, and the ridges for muscular attachment
strongly developed, indicating an old individual. Greatest
length (front base of incisors to end of crest), 18; mastoid
breadth, 8.3; zygomatic breadth, 10.1; interorbital breadth,
4; length of molar-premolar series, 4.2; palatal length,
5.3.

_Type_, No. 12753/11040, [female symbol] ad., Izamal,
Yucatan; collected by Dr. George F. Gaumer, for whom the
species is named.

In coloration _Adelonycteris gaumeri_ resembles examples of _A. fusca_
in immature dark pelage, but it differs from this species in the
thinness of the ears, and in the greater relative length of the
narrower and more tapering tragus, and in its very much smaller size.
In size it resembles both _'Vesperugo' propinquus_ Peters and _V.
(Marsipolaemus) albigularis_ Peters, respectively from Guatemala and
Mexico. The peculiar structure of the ears, to say nothing of the
coloration, in _V. albigularis_, render comparison with this species
unnecessary. _V. propinquus_ is described as reddish above, paler and
more reddish yellow below, and in this respect is widely different
from _A. gaumeri_. It has also a longer thumb and foot than _A.
gaumeri_.

The type and only specimen of this species has been kindly presented
by Dr. Gaumer to this Museum, with other specimens of Yucatan mammals.

End of the Project Gutenberg EBook of Description of a New Vespertilionine
Bat from Yucatan, by Joel Asaph Allen

*** END OF THIS PROJECT GUTENBERG EBOOK NEW VESPERTILIONINE BAT ***

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