616 CLASS XVII. 



molars various in number, true molars tuberculate, covered with 

 enamel. Hind feet pentadactylous, with pollex apart and clawless, 

 the two succeeding toes conjoined as far as the claws. 



Phascolarctos BLAINV., I/ipurus GoLDFUSS. 1 Dental formula 



. 3_3 i_i i_i 4-4 QA 



i. - ^ , c. TT -77 , p. ^ , m. j - = 30 ; premolars and molars 



quadrituberculate. Toes of fore feet separated unto two sets, the 

 one composed of the two inner, the other of the three outer toes. 

 Tail none. 



Sp. Phascolarctos cinereus, Phascolarctos fuscus. DESMAB., Lipurus cinereus 

 SCHBEB. Sdugeth. Tab. 155 A, (Ab, the skull and feet), Cuv. R. Ani. PL i, 

 fig. 5; GUB. Iconogr., Mamm. PI. 22, fig. 3, WATEBH. Nat. Libr. PI. 31, 

 Mamm. I. PI. 9, fig. i ; the koala, an inert animal from the east of New 

 Holland, which climbs on trees and lives on the young shoots and leaves ; 

 it attains a length of nearly 2'. ' ,. 



Phalangista Cuv. Small molars, variable in number, decidu- 

 ous, not permanent, occupying the space between the canines and 



^ 1 1 



larger molars ; mostly the larger molars = = . Canines - 



o o i i , 



the inferior canines very small, contiguous to the incisors. Claws 

 compressed, curved. Tail long. 



Compare on this genus TEMMINCK, Monogr. de Mammal, i. pp. i 20. 

 All the species are met with on the islands of the Indian Archipelago, at 

 New Guinea and New Holland. They are dull animals that sleep by day 

 and hide amongst the leaves of trees. They eat all kinds of food, but 

 principally fruits. A secretion from glands in the neighbourhood of the 

 anus gives an unpleasant odour to the animals; yet the flesh of some 

 species is eatable. In many species of this genus the canine tooth of the 

 upper jaw, as in Hypsiprymnus, is inserted partly in the inter-maxillary 

 bone. The small teeth in front of the large molars are very various in 



number, so that in different species, on the whole, ^-^, - or ~? molars 



o o 7~7 o 8 



are present. 



a) With tail prehensile, naked in great part towards the end; with ears 

 short, rounded. 



Sub-genus Ceyonyx TEMM., Ouscus LACBP. 



Sp. Phalangista maculata GEOFFB., DESMAB., BUFF. Hist. nat. xm. PI. u 

 (Phalanger male), QUOY et GAIM. Voy. de VUranie, Zool. Atlas, PL 6, 



GOLDFUSS proposed also the name Morodactylus ; Grundriss der Zoologie, s. 629. 



