216 THE ZOOLOGIST. 



desert-like regions along the coast, and it will be here observed 

 that its need for water is considerably modified according to its 

 surroundings. In the desert-like sandy plains around Roebuck 

 Bay on the coast of West Australia the species was perhaps even 

 more numerous than along the rivers of Arnhem Land. With 

 two exceptions, no surface-water was here to be found, and the 

 animals quenched their thirst either by the moisture obtainable 

 with their food, or by going to the shore of the ocean and 

 drinking the brine. 





