26 



PHASCOLARCTIN^. 



hallux present, large, widely opposable, with a broad, nailless, 

 terminal pad. Tail (except in Phascolarctus) very long, and 

 almost always prehensile. Stomach simple. Co3cum present 

 (except in Tarsipes). Pouch well developed, opening backwards. 



Subfamily I. PHASCOLARCTINJE. 



Tail wanting. Muzzle short and broad. Tongue not extensile. 

 Cheek-pouches present. Ccecum large and complicated. Teeth 

 large. 



Genus I. PHASCOLARCTUS, Blainwlk (1816). 



Size large ; form very stout and clumsy. Fur thick and woolly. 

 Ears large, thickly furred. Flanks without flying-membrane. 

 Fore toes subequal, their lengths in the following relative order 

 4, 3, 5, 2, 1 ; the first and second opposable to the others. Claws 

 thick, strong, and sharply pointed. Palms and soles granulated 

 without striated pads. Tail rudimentary. Mamnue two. Ribs 

 numbering eleven only. 



T\ . T 1-2.3 r\ 1 T> 0.0.0.4 -m t 1.2.3.4 ,T A 



Dentition. 1. 1 _ , C. , P. ^^ M. r ^ x 2 = 30. 



Habits. Arboreal ; phytophagous. 



Note. A fifth lower molar is occasionally developed. 



1. PHASCOLARCTUS CINEREUS, Gold/., sp. (1819). 

 Koala ; Native Bear. 



Fig. 2. 



Side view of skull of Phascolarctus cinereus, reduced one half. 



General color above gray ; below white or yellowish-white. 

 Rhinarium thinly clothed with minute hairs. Ears rounded, the 

 hairs 011 their backs black tipped with white ; elsewhere white, 

 rump dirty yellowish- white, sometimes irregularly spotted. Hands 

 and feet white. 



