ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 
lower jaw, are somewhat crowded, the intermediate pair are slightly larger 
than the lateral ; they are all deeply notched, and broad at the apex. The 
cerebral portion of the skull is much arched and the anterior portion is de- 
pressed. The zygomatic arch is imperfect ; see PI. 35. figs. 2. The nose- 
leaf is lanceolate, and of moderate size : the ears are also of moderate size ; 
they are rounded at the tip and emarginated on their exterior edge : the 
tragus is elongated, and suddenly attenuated towards the apex ; the outer 
margin is deeply notched towards the base, and very obscurely crenulated 
above this notch. The interfemoral membrane is of moderate extent, and 
emarginated posteriorly. The tail, which is very slender, is entirely enclosed 
by the interfemoral membrane, and the visible portion appears to consist of 
but two joints, which together, measure about two and a half lines in length. 
The basal half of the thumb is enclosed in membrane. The fur is soft and 
rather long. The general tint of the upper and under parts of the body is 
brownish-ash ; the hairs on the neck and on the whole of the back are grey 
at the base, then white, or nearly so, brownish-ash near the tip, and whitish 
at the tip. On the belly the hairs are nearly of an uniform brown-ash colour, 
their apices only being whitish. The ears, nose-leaf, and membrane of the 
wings, are of a sooty-black hue. 
In. 
Lines. 
In. 
Lines. 
Length of head and body 
. 2 
0 
Length of ear 
. 0 
7 
antibrachium . 
. 1 
nose-leaf 
. 0 
3£ 
thumb (claw included) . 
. 0 
H 
Expanse of the wings . : 
. 10 
0 
tibia .... 
. 0 
7 
Habitat, Pernambuco, Brazil. (. August .) 
“ This species appeared to be common at Pernambuco (five degrees north of 
Bahia). Upon entering an old lime-kiln in the middle of the day, I disturbed a 
considerable number of them : they did not seem to be much incommoded by the 
light, and their habitation was much less dark than that usually frequented as a 
sleeping place by these animals.” D. 
I have named this species after Mr. John Gray, the author of several exten- 
sive memoirs on the order to which it belongs, and to whom I am indebted for 
valuable assistance whilst comparing this and other species with those contained 
in the collection of the British Museum. 
2. Phyllostoma perspicillatum. 
I find in Mr. Darwin’s collection, a bat agreeing with the description of M. 
