MARSUPIALS. 
105 
animals, which induced the early Dutch settlers in the Gape 
to compare them to Pigs, and to name them Aard-Varks, 
i. e. Earth-Pigs. 
Ant-Bears have teeth, of a peculiar and complex 
structure, each consisting of a large number of separate 
parallel tubes, closely packed together. In transverse section 
these teeth present an appearance not unlike that of a piece of 
Ant-I3eai', or AardA'arlv (On/cteropvs afer). 
cane ; and they are preceded by a set of minute milk-teetli, 
remnants of a former functional set, which show indications of 
a division into different groups, such as premolars and molars. 
The cheek-arches, or zygomata, are complete, and there are 
well-developed collar-bones, or clavicles. The Ant-Bear, 
Orycteropiis afer (fig. 57), is about the size of a Pig. 
Order X. MARSUPIALIA, or Marsupials. 
(Lower Gallery, (kses 69-70.) 
This order differs by numerous and important anatomical 
characters from all the preceding groups ; and there is, 
moreover, a curious parallelism between its members and the 
