ns 
LOWER MAMMAL GALLERY. 
of the muzzle, which resembles the beak of a Duck, and is 
provided with the above-mentioned horny plates, which in the 
adult serve the purpose fulfilled during youth by teeth (fig. 65), 
the tail is long and broad, and the toes are webbed. The coat 
consists of thick, close hair without any spines. The eggs, two 
in number, are deposited in the burrow. 
Fig'. 6o. 
The Temporary Upper Teeth of the Duck-billed Platypus. 
The only species is the Duck-billed Platypus, or Water-Mole, 
Ornithorhjnclius anatimis ( 1487 , fig. 64), which, as might be 
expected from its structure, is entirely aquatic, feeding on 
other water-animals, for which it searches in the mud in the 
same manner as a duck. Like the Spiny Anteater, it is a native 
both of Australia and Tasmania, but it does not occur in New 
Guinea. 
