540 



lilAMlIALLi. 



zoology, and which appear destined to link together the prin- 

 cipal masses, so as to form an uninterrupted chain, extending 

 from the most imperfect to the most perfect. The general 

 characteristics of this animal assimilate it to the Quadrumana, 

 but it also shows its relationship to the Cheiroptera by its 

 interdigital membrane, and even in a slight degree to the Insec- 

 tivora through its dental system. So that while it approaches 

 the Makis in the configuration of its cranium, and the complete 

 similitude of its reproductive organs, it is allied to the Bats 



Fig. 234.— Colligo [Gtdeopithecus volans). 



by the possession of a membrane enveloping it laterally, from 

 the neck to the end of the tail, and which, being attached to the 

 extremities of the four limbs, plays the part of a parachute, per- 

 mitting the creature to sustain itself in the air for even a longer 

 time than the Flying Squirrels. This membrane is hairy, and of the 

 same colour as the body ; it forms quite a palm between the digits 

 of the fore and hind quarters, which are all directed the same way, 

 and are therefore unsuitable for prehension. The nails are narrow. 



