EIGENMANN : FRESH WATER FISHES. 



367 



their presence in Africa and South America. The Poeciliidce live indif- 

 ferently in marine, brackish water or fresh water. They reach their 

 maximum development in the fresh waters of Mexico, the West Indies 

 and Central America. The marine species are found along the shores — 

 not at sea — and there is, therefore, at present, no known means of getting 



Range of the Characidae. 



Range of the CichHdae. 

 To Illustrate the Origin of the South American Fresh-water Fish-fauna. 



