﻿4 



Indiana University Studies 



The fresh-water fishes on the two slopes of the present state 

 of Panama were incidentally considered in various articles, or 

 books dealing largely with other things. Those published before 

 1864-66 were reviewed in detail in Gunther's volume, u An Account 

 of the Fishes of the States of Central America, Based on Collec- 

 tions made by Captain J. M. Dow, F. Godman, Esq., and O. 

 Salvin, Esq." (Trans. Zobl. Soc. London, VI, pp. 378-494, plates 

 63-87). While Giinther dealt largely with marine fishes, he 

 considered the fishes of the Bayano, Chagres, and the rivers, not 

 specifically named, between 7° and 9° N., and 77° and 83° W., 

 in which collections were made by Wagner. 



r 



Fig. 1. Sections from tide water on the Pacific side to the Atlant'c ends of 

 surveyed ship canaV Adapted from Selfridge, Reports of Explorations and 

 Surveys to ascertain the Practicability of a Ship-C anal between the Atlantic 

 and Pacific Oceans by Way of the Isthmus of Darien. Washington, 1874, 

 Plate I. 



A. Between tide water in the Rio Lara, a tribatary of the Rio Savana 

 and Caledonia Bay. 



B. Between the mouth of the Rio Bayano, a tributary of the Chepo 

 and the Gulf of San Bias. 



C. Between tide (Pinogana) in the Rio Tuyra basin and the Rio 

 Atrato near Rio Sucio via the Rio Cacarica. 



Regan (Biologia CentraU Americana, "Pisces", pp. v-xxxii 

 and 1-203, Maps 1 and 2, Plates 1-26) considered all of the 

 fresh-water fishes of the area, incorporating the results of the 

 various studies between Gunther's general account and his own 

 excellent volume. Three special studies were made of the fresh- 

 water fishes before the canal united the two slopes. The first 

 two were limited largely to a consideration of the fishes that had 

 been recorded by previous authors before the canal had materially 



