ORDER QUADRUMANA. 73 



Our third subdivision has the incisives, and the 

 upper canines like the second. The two toes of the 

 hind feet are also united in a similar manner. But 

 they want the posterior thumb, and the lower ca- 

 nines. It comprehends but a single genus. 



The Kanguroo-Rats, (Hypsyprymnus, Illig.*) 



The last animals of this family which preserve any 

 thing of the general characters of the Carnassiers. 

 Their teeth are prett}/ - nearly the same as those of 

 the phalangers> and they have an additional pointed 

 canine above. The two middle incisors in the upper 

 row are longer than the others and pointed. Below 

 they have but two, inclining forw r ard. They have a 

 long molar in front, trenchant and indented, followed 

 by four others with four blunt tubercles. What, 

 however, most eminently distinguishes these ani- 

 mals is their hind legs, being much longer in propor- 

 tion than the fore. The feet of the latter want the 

 thumb or great toe, and have the two first toes 

 joined together as far as the nail ; so that it might be 

 imagined, on a slight glance, that there were but 

 three toes, the internal one of which had two nails. 

 They often walk on two feet, and employ their 

 long and strong tail to support themselves. They 

 have the form and habits of the kanguroos, from 

 which they differ only by having their canine tooth 

 in the upper jaw. Their regimen is frugivorous, 

 and their stomach large, and provided with many 



* 'Yxpi^vfAvoi;, raised from the hinder part. 



