616 CLASS XVII. 



molars various in number, true molars tviberculate, covered with 

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

 the two succeeding toes conjoined as far as the claws. 



Phascolarctos Blainv., Lipu7nis GoLDFUSS.^ Dental formula 



3 — 3 1 — 1 1 — 1 4 — 4 



i. '- , c. 7^ — 7T , p. -z r , m. -; -. = 30 ; premolars and molars 



1 — 1' — ^ 1 — 1 4 — 4 ^ 



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 fiiscus. Desmae., Lipurus cincreus 

 ScHREB. Sdugeth. Tab. 155 A, {Ah, the skull and feet), Cuv. R. Ani. PI. t, 

 fig. 5; Gder. Iconogr., Mamm. PI. 22, fig. 3, Waterh. Nat. Libr. PI. 31, 

 Mamm. I. PI. 9, fig. 2 ; 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 



5—5 1—1 



larger molars ; mostly the larger molars _ _ _ . Canines 3 — j 



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 Hypsipryninus, is inserted partly in the inter-maxillary 



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



6—6 7—7 7—7 

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



0— t) 7~7 0—0 



are present. 



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

 short, rounded. 



Sub-genus Ceyonyx Temm., Cuscus Lacep. 



Sp. Phalangista inaculata Geoffr., Desmae., Buff. Hist. nat. xiii. PI. 11 

 {Phalanger male), QuOY et Gaim. Voy. de VUranie, Zool. Atlas, PI. 6, 



GoLDFUSS proposed also the name Morodactylus ; Grunclriss der Zoologie, s. 629. 



