EIGENMANN : FRESH WATER FISHES. 



357 



STERNOPYGUS 



Known distribution of the Gymnotid genus 

 Sternopygus (three species). 



tSASTEROPELECUS 



Known distribution of the genera Gastero- 

 pelecus and Thoracocharax, two aberrant 

 characins. 



HEMIANC13TRU3 



STUR150MA 



Known range of the mailed-catfish genus Known distribution of the mailed-catfish 



Hemiancistrus. genus Sturisoma. 



To Illustrate the Origin of the Pacific Slope Fauna. 



