AN ANNOTATED LIST OF FISHES KNOWN TO OCCUR 

 IN THE FRESH-WATERS OF COSTA RICA. 



BY SETH EUGENE MEEK. 



The following paper is based on a collection of fishes made by 

 myself during April, 191 2, and on a number of small collections made 

 from time to time by Dr. Anastasio Alfaro, Director of the National 

 Museum of Costa Rica. In the list of localities under each species 

 Dr. Alfaro's name follows those localities where specimens were col- 

 lected by him. 



The following is a list of localities arranged according to river basins. 

 The figures give in meters the approximate altitude of each locality. 

 Rio Reventazon Basin, Atlantic; — La Junta (65); Chitaria (340); 



El Guayabo (360); Turrialba (621); Tucurrique (941); Juan 



Vinas (1000); Rio Iroquois (?); Quebrada de los Negros (?). 

 Rio San Juan Basin, Atlantic; — Costa Rica River, one half day's 



ride from Guapilis (100). 

 Rio Colorado Basin, Atlantic; — Guapilis (250); Virginia (350). 

 Rio Parismina Basin, Atlantic; — Parismina (240). 

 Rio Matina Basin, Atlantic; — Zent (20); Cuba River near Zent 



(20); La Victoria (50). 

 Rio Tarcoles Basin, Pacific; — El Sardinal, Santa Clara (60); Rio 



Turrubales (200); Orotina = Santo Domingo (250); Turrucares 



(300); Rio Siquiares (500); Irazu (1100+); Tiribi (1160); San 



Jose (1165); Rio Maria Aguilar (1165); Patarra (1180); Tobosi 



(1200); San Isidro (1260); Pacaca (1500). 

 Rio Diquis Basin, Pacific; — Rio Grande de Terraba (367); Buenos 



Aires de Terraba (389); Boruca (563). 

 Rio Ballena Basin, Pacific; — Ballena (100); Rio Ballena (100). 

 Rio Tempisque, Pacific; — Las Canas (50); Higueron (50); Las 



Lajas, Taboga (50); Vol. Tenorio (?). 

 Rio Jesus Maria Basin, Pacific; — Jesus Maria at mouth of Rio 



Machuca (50); Orotina, Rio Machuca (250). 

 Rio Guacimal Basin, Pacific; — El Sardinal, Santa Clara (60). 

 Pacific; — Sumbres (?); Paso Agres (?); Brazo vSeco (?); Punta 



Arenas (3); Tivives (10). 



