March, 1914. List or Fishes of Costa Rica — Meek. 121 



Family Carangidae. 



Caranx latus Agassiz. 



Caranx latus Agassiz, Pise. Bras., 1829, 105 (Brazil). 

 One specimen of this species was taken in swift clear water at the 

 foot of rapids, with Joturus, Agonostomus, and Brycon. 

 Zent (i), 180 mm. 



Family Liognathidae. 



Gerres brevimanus Gunther. 



Gerres brevimanus Gunther, Proc. Zool. Soc. Lond., 1864, 152 



(Chiapas, Guatemala). 

 The members of this family are marine, although some few species 

 ascend rivers to some distance above tide water. 



This species was very abundant in the Rio Jesus Maria. 

 Jesus Maria (21), 50 to 245 mm. 



Encinostomus californiensis (Gill). 



Dtapterus californiensis Gill, Proc. Ac. Nat. Sci. Phila., 1862, 245 



(Cape San Lucas). 

 Jesus Maria (6), 63 to 120 mm. 



Family Cichlidae. 



The Cichlids; Mojarras. 



In Costa Rica thirteen species of cichlids have been taken. It is 

 probable that others known from Nicaragua also occur in the lower 

 courses of the rivers of Costa Rica, which flow into Lake Nicaragua 

 and its outlet, the Rio San Juan. The cichlids occupy a position in 

 the fresh-waters of tropical America quite similar to that of the sun- 

 fishes in the eastern half of temperate North America. In general form 

 they are much alike, and so far as known have in general much the 

 same habits. Some species, like many of the genus Lepmnis, have 



