10 MR. A. MURRAY ON A NEW BAT. [Jan. 14, 
which it springs for the source of this development. It does not 
extend much further back than the lower canine teeth ; but there is 
a slight plait or perceptible line running on each side all the way to 
the back of the mouth, giving the appearance of a second thin flat 
tongue lying in the hollow of the mouth, tied down like the tongue 
of a crocodile; but the separation here is a mere trace, and it is only 
the fringed margin in front which is free. 
The neck is distinct, and the skin has the appearance of having 
some cellular space between it and the muscles. 
The body is oblong and compact; the ribs descend far, and the 
lower ribs are very large ; the stomach is moderate in size, furnished 
internally with several large transverse folds; the small intestines 
are not very long; there is no cecum. 
The arms have the thumb and index unguiculate, the rest of the 
fingers are without claws ; the thumb has two phalanges, the rest have 
three phalanges. The thumb is united to the wing by a membrane 
stretching on both sides over the whole of the proximal and half of 
the distal phalanx ; the proximal phalanx of the thumb is shorter 
than the distal. The winged membrane is not extended across the 
back, but is very ample; the winged space between the third and 
fourth fingers, and between the fourth and the body, has in its middle 
numerous longitudinal bundles of muscular fibre interwoven without 
attachments, and one or two similar transverse bundles ; these are 
probably for the purpose of assisting in the folding of the wing. 
Along these bundles of muscular fibre the membraneous wing is 
closely wrinkled; and there is little doubt that they will also strengthen 
the membrane where they occur. 
The hind feet are uniform and all unguiculate ; they are united to 
the body by an interfemoral membrane, which has a single large 
bundle of muscular fibres stretching obliquely across from the foot 
to the coccyx. 
The testicles are situated under the skin on each side of the male 
organ, and are round. 
There is no tail. 
The length of the whole body, in the specimen from which the 
above description is taken, is nearly 7 inches; the length of the 
head 31 inches, its depth about 1} inch. The stretch of wings 
is 28 inches across. 
The most remarkable features in this animal are its large hammer- 
shaped head, and the great external development of its lips. Its 
whole structure is essentially that of a Pteropine Bat, with some 
modifications showing a tendency towards the Rhinolophi. No 
species having any of the nasal appendages peculiar to that section 
of the Bats has yet been found among the Pteropine Bats. They are 
strictly frugivorous, and have the nose like that of a fox or dog. 
The present species, although it has not any nasal appendages, has 
labral expansions which may possibly be analogous to them, and the 
animal may possibly have peculiar habits to which the structure of 
these organs is especially adapted. 
Unfortunately, in the only specimen yet received, the stomach and 
