THE QUADRUPEDS OF ARIZONA. 283 
Territory. The predominant features of the mammalian 
Fauna are noticed, and all the species which have fallen 
under his own observation, or are otherwise known to 
him as inhabitants of Arizona, are at least alluded to. 
But the limits of an article like the present necessarily 
preclude a detailed account of the habits and manners of 
other than the more characteristic and interesting ani- 
mals. 
Order Cheiroptera, the Bats. Of this remarkable and 
interesting order two groups are represented: one by a 
single species, the other by numerous forms. The Zsti- 
ophora, or Leaf-nosed Bats, are so called from having a 
curious membranous expansion of the snout, of a fanoied 
foliaceous appearance, in which the nostrils open. is 
group is represented by the Macrotus Californicus, the 
Long-eared Bat of California; described and figured by 
- Professor Baird in the Zodlogy of the Mexican Boundary 
Survey. The type specimen was obtained at Fort Yuma, 
at the extreme south-west corner of the Territory, and 
was the first indisputable instance of the occurrence of 
the group in the United States. I have not met with it 
personally, and am not aware that any account of its 
habits has been placed on record. 
The other known species of Arizonian Bats belong to 
the extensive family Vesper tilionide, which is so gene- 
rally distributed throughout the United States. Perhaps 
the most interesting species, and one of the commonest, 
is the Pale Bat inbus pallidus Allen), first described 
by Major Le Conte from California, but now known to 
Tange over New Mexico and Arizona. Besides some 
dental and cranial peculiarities, which separate it generi- 
cally from Vespertilio, its index finger has two phalanges, 
exhibiting a tendency towards the characters of an en- 
