1862.] MR. R. SWINHOE ON THE MAMMALS OF FORMOSA. 357 
native. The body of the Bat was of an orange-brown, but the wings 
were painted with orange-yellow and black. It was caught, suspended 
head downwards, on a cluster of the round fruit of the Longan tree 
(Nephelium longanum). Now this tree is an evergreen ; and all the 
year through some portion of its foliage is undergoing decay, the 
particular leaves being, in such a stage, partially orange and black. 
This Bat can, therefore, at all seasons suspend from its branches and 
elude its enemies by its resemblance to the leaf of the tree. It was 
in August when this specimen was brought to me. It had at that 
season found the fruit ripe and reddish yellow, and had tried to 
escape observation in the semblance of its own tints to those of the 
fruit. I suggested to Mr. Tomes that this group of Bats would 
appear to be frugivorous ; and he replied that he had suspected, from 
the dentition of specimens he had dissected, that they were par- 
tially so. 
The other fact is with regard to the group of Rat-tailed Bats 
(Molossus). One that I kept alive had a curious habit of pushing 
its eye almost out of the socket when disturbed, as if to get a better 
view of the cause of its annoyance. When tranquil again, the eye 
would sink right in and almost disappear. The skin of the tail in 
this genus slides up and down the tail-bone, by this means folding 
and unfolding the interfemoral membrane. 
9. Scrurus ERYTHRZUS. Chinese, Pong-bay-choo (Puff-tailed 
Rat). 
The larger Squirrel of Formosa is positively identical with the 
animal from Bootan, in the Himalayas, and markedly distinct from 
the S. cinnamomeiventris from China. This, at first sight, appears 
a curious fact ; but I have little doubt in my mind that S. erythreus 
is also found in the hilly parts about Foochow, where many plants 
and birds have been procured identical with Himalayan forms. The 
cinnamon-bellied species is from the neighbourhood of Canton. 
Many years ago, a live specimen of 8, erythreus was brought to me 
at Amoy, the person to whom it belonged not knowing whence it 
came ; but, in all probability, it had been taken in some not distant 
locality. The young of this species is lighter on the head and 
shoulders than the adult, but darker in the hinder portions. Its 
under parts are a dingy pinkish brown ; and its young-rat-like tail is 
black on the basal third, and light yellowish brown on the remaining 
portion. 
10. Scrurus MACLELLANDI. Chinese, Buh-kwa-choo (Citron- 
Rat). 
In this small Squirrel we have another Himalayan type, not yet 
observed in China. I have compared my numerous examples with 
those in the British Museum, and I am inclined to think it identical ; 
for its peculiarities are not constant. It is much darker in general 
colour; and in the majority of specimens the black longitudinal stripes 
are more or less indistinct, and the single yellow stripe along each 
side of the back in some is scarcely apparent ; but I have some almost 
