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. SciURUS ERYTHR^us. 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. erythrcBus 

 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 S.'erythrceus 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. SciURUS 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 



