50 , CLASS MAMMALIA, 



There are several new and interesting specimens of the 

 Marsupiata in the Museum of the Linnaean Society ; the 

 most important of which are referred to in the Table. 



In the subdivision of the Koalas, we find the two upper 

 intermediate incisors much longer than the others. The 

 lower incisors are like those of the Kanguroos. There are 

 four small intermediate teeth between the incisors and 

 upper molars. The molars have four tubercles. 



The ears are large and pointed, with the conch directed 

 forwards. 



The feet are pentadactylous. The toes of the anterior 

 extremities are divided into two groups ; the thumb and 

 index on one side, and the three others on the opposite. 

 The thumb of the posterior extremities is very large, se- 

 parated without a claw. The two following toes are 

 smaller, and united as far as the claws. This description 

 we have taken from M. de Blainville. It differs from that 

 of the Baron in giving a thumb to the hinder extremities. 



There is but one species — the Koala of our author, which 

 the French naturalists term Phascolarctos fuscus. The 

 hair is long, tufted, and thick, chocolate-brown, according 

 to M. de Blainville, but ashen according to M. Cuvier. Its 

 size is that of a middling Dog. In its air and gait it is like 

 a small Bear. It climbs trees with facility, and digs bur- 

 rows. The female carries the young a long time on the 

 back, in the manner represented in our plate, from a draw- 

 ing made in New Holland by Mr. Lewin. It inhabits the 

 banks of the river Vapaum, in New Holland. 



The Wumbat is a species as yet isolated in nature, which 

 forms the type of a genus, and constitutes that genus in 

 itself alone. Its relations with other Mammalia are so 

 remote, that it is a matter of uncertainty to what order it 

 should be referred. It is related to the Didelphes by the 

 organs of generation; the young are born prematurely, 



