i;S MAMMALIA, REPTILIA, ETC, 



of the sea-weed-loving turtles. It is a pretty, active 

 little animal, readily acclimatised, and therefore a 

 great favourite in public aquaria. 



Fig. 117. 



Hawk's-bill Turtle (CJielonia imbrieata). 



Mr. Lloyd's restriction of aquaria to animals that 

 possess gills and not lungs is not altogether re- 

 cognised by nature, unless he refers solely to their 

 mode of breathing, to which, of course, all the 

 mechanical aeration of the water is adapted. Reptiles 

 and mammals are frequently inhabitants of the 

 same seas as the fishes ; and there is no reason why 

 we should not acknowledge this fact. But, un- 

 doubtedly, fishes are more pleasing and familiar 

 objects in the water than anything else, and as they 

 are distributed everywhere with an abundance that is 

 unfailing in its supply, they will always continue to 

 be among the chief attractions of a marine aquaria. 

 Few of them are adapted to live in shallow or tidal 



