434 DISTRIBUTION IN SPACE AND TIME 



It is very interesting to note that in the tropical forests of South 

 America the carnivorous beetles, which in countries like our own 

 live upon the ground, have taken to an arboreal life. They are, 

 in fact, driven from their natural domain by predaceous Ants, 

 the habits of some of which have elsewhere been mentioned (see 

 vol. ii, p. 104). 



