EIGENMANN : FRESH WATER FISHES. 



359 



^:) 



PYeiDlUM 



OCLORUM 



Distribution of the presumably old moun- 

 tain catfish, Pygidium. 



Distribution of the catfish Cyclopium of 

 the high Andes. 



CI-VcTOSTOMUS 



Distribution of the mailed-catfish Chseto- Distribution of the Andean characin, Crea- 



stomus of the Andes. Pacific side of Panama. grutus. 



To Illustrate the Origin of the Pacific Slope Fauna. 



