251 
GEOGRAPHICAL ZOOLOGY. 
[part IV. 
Family 84. — ECHIBNIBiE. (1 Genus, 2 Species.) 
General Distribution. 
Neotropical 
Sub-reg ions. 
Nearctic 
Sub-regions. 
PAL/E ARCTIC 
Sub-regions. 
Ethiopian 
Sub-regions. 
Oriental 
Sub- regions. 
Australian 
Sub-regions. 
— 2 
The Echidna , or Australian Hedgehog, although quite as re- 
markable in internal structure as the Ornithorhynchus, is not so 
peculiar in external appearance, having very much the aspect of 
a hedgehog or spiny armadillo. The two species of this genus 
are very closely allied ; one inhabits East and South Australia, 
the other Tasmania. 
Extinct Echidnidce. — Kemains of a very large fossil species of 
Echidna have lately (1868) been discovered at Barling Bowns 
in Australia, 
Remark on the Distribution of the Monotremata. 
This order is the lowest and most anomalous of the mammalia, 
and nothing resembling it has been found among the very 
numerous extinct animals discovered in any other part of the 
world than Australia. 
