56 MAMMALS OF THE PACIFIC WORLD 



The Pipistrelles (Pipistrellus) occurring in Eurasia, Africa, 

 and North America are almost as widely dispersed as the mouse- 

 eared bats. In the Malay and Pacific areas they are found 

 from the Asiatic continent east to the Solomons and south to 

 Tasmania. They are about the size of Myotis or even smaller, 

 the length of the head and body varying from one and three- 

 eighths to two and three-eighths inches, and the forearm from 

 one to two inches. Several closely related bats, found from 

 Sumatra to Borneo and the Moluccas, have enlarged sucker- 

 like pads at the base of the thumb. These are often considered 

 to belong to a distinct genus (Glischropus), but actually dif- 

 fer little from the small pipistrelles. 



The Noctule (Nyctalus), a yellowish brown bat with short, 

 broad ears, is found in the Malaysian islands and also in Japan. 

 It is much like a large pipistrelle, with cheek-teeth five in num- 

 ber above and below. The length of head and body is about 

 three inches, and the forearm measures two inches or a little 

 more. Another Japanese species of this genus, otherwise very 

 similar, is about a fifth larger. 



The AustraHan Little Brown Bats (Eptesicus) are relatives 

 of the American big brown bat and the European serotine. 

 They are as small as the smaller pipistrelles : the head and body 

 about one and five-eighths inches and the forearm one and one- 

 eighth to one and one-half inches. The cheek-teeth number 

 four above and five below on each side. This genus is repre- 

 sented by a species on the Malay Peninsula, as well as in A.us- 

 tralia, but it is not known from the islands. 



The Particolored Bat (Vespertilio), which occurs in Japan 

 and Eurasia, is reddish brown above; the whitish tips of the 

 hairs produce a marbled appearance. Below it is cream-colored. 

 It is about the size of the American big brown bat: head and 

 body about three inches, forearm about one and five-eighths 

 inches. 



The New Guinea Brown Bat (Philetor) is dark chestnut- 

 brown both above and below, and has black wing membranes. 



