140 



THE GEOGRAPHY OF MAMMALS 



number of them extend across Wallace's line into tlie 

 Austro-Malayan islands — a distribution shared by hardly 

 any other of the Oriental genera of mammals. 



One of the Slow Lemurs, Nycticebus, is common to 

 this and the Malayan Sub-region ; it bears a certain resem- 

 blance to the Indian genus Loris, but is distinguished by 

 its somewhat stouter aspect and its still more sluggish 

 habits. 



Among the Monkeys of this Sub-region, in addition to 

 the two genera Macacus and Semnopithecus, inhabiting 

 also the Indian Sub-region, a genus of the anthropoid 

 Apes occurs. This is Hylobates, members of which are 

 commonly known as Gibbons ; they are slender animals, 

 with very long limbs and no tail, and are entirely re- 

 stricted to the forest districts, being exclusively arboreal 

 in their mode of life. 



The following summary of the Burmo-Chinese genera 

 of mammals has been drawn up exactly in the same way 

 as the previous list, except that under an additional head- 

 ing, " Australian," are placed two genera common to the 

 Oriental and Australian Sub-regions : — 



