464 eigenmann: fish fauna of bogota 



Creagrutus Giinther. 



In swift brooks, widely distributed. 



C. magdalenae E. West of Bogota. Chiefly in swift lowland brooks. 

 C. beni E. East and north of Bogota, to 3,628 feet. On both slopes. 



Argopleura Eigenmann. 



Colombia west of the Cordillera de Bogota. 



A. diquensis E. West of Bogota, lowland to 7,258 feet. 



POECIUIDAE 



Rivulus Poey. 



Marine brackish and fresh water. South America to Buenos Aires. 

 R. magdalenae E. & H. West of Bogota, to 3,372 feet. 



II. THE FISHES OF THE PLAIN OF BOGOTA 



The Plains of Bogota are drained by the Rio Funza or Bogota 

 which leaves the plateau by the Tequendama falls, 418 feet 

 high. It empties into the Magdalena near Girardot. 



The Plains of Bogota (locality No. i), at about 9,000 feet 

 elevation, harbor but few species. Eremophilus muiisii, "El 

 Capitan," which has elsewhere been recorded only from Chiquin- 

 quira, just north of the Plain; Pygidium hogotense, which is not 

 distinguished by the local fishermen from the young of E. mutisii, 

 extends north to the Santa Marta mountains; and Grundulus 

 hogotensis, the "Guapuche" elsewhere taken only in the Quebrada 

 Zuaita, wherever that may be. These three species were found 

 in abundance everywhere I was able to fish, 



"El Capitan" is found in the lakes as well as in the streams and 

 the fishwomen in the markets point out lake forms from river 

 forms. There was evidently considerable variation but whether 

 this was correlated with localities I can't say. Three specimens 

 were sent me recently, one of them white, one of them blind, 

 and the third piebald. The specimens suggest that there is a 

 white blind species which at times hybridizes with the normal 

 form. 



In addition to the three very common species Gonzales got 

 Hemihrycon tolimae at Suescum at the extreme northern edge 

 of the basin of the Rio Funza or Rio Bogota. Steindachner 

 has recorded Pygidium venulosum from the Paramo de Cruz 

 Verde at about 10,000 feet. This Paramo lies along the crest 



