THE CAROLINA BAT 



175 



We have now noticed the main groups of bats which 

 inhabit the world in our day ; but we know little 

 indeed of bats which inhabited it in earlier epochs. The 



FIG. 43. 



THE COLUGO. 



oldest known remains are but fossils found in tertiary 

 deposits, and they offer us no startling revelation. 



Some form of existing beasts which are now distinct 

 enough (such as the ox, the pig, and the horse) were pre- 

 ceded in early tertiary times by others which were more 



