104 Fretp Museum or Natura History — ZoéLocy, Vor. X. 
to 140 mm. (Alfaro); San José (2), 91 and 108 mm. (Alfaro); Rio Maria 
Aguilar (8), 93 to 135 mm. (Alfaro); Rio Tiribi, San José (79), 45 to 
160 mm. (Alfaro); Tiribi (19), 70 to 150 mm. (Alfaro); Patarra (2),» 
80 to 130 mm.; San José, April 26 (79), 50 to 150 mm. 
Rhamdia heteracantha Regan. 
Rhamdia heteracantha Regan, Biol. Cent. Amer., 1907, 134 (Juan 
Vifias, Costa Rica). 
Parismina (5), 125 to 205 mm. 
Rhamdia underwoodi Regan. 
Rhamdia underwoodi Regan, Biol. Cent. Amer., 1907, 135, pl. 23, 
fig. 4 (Juan Vifias, Costa Rica). 
Costa Rica River (1), 155 mm.; Chitaria (1), 83 mm. (Alfaro); 
Tobosi (9), 68 to 105 mm. . (Alfaro). 
Rhamdia nasuta Meek. 
Rhamdia nasuta Meek, Pub. Field Mus., Zodl. Ser., vir, 1909, 207 
(Buenos Aires de Térraba, Costa Rica). 
Buenos Aires de Térraba (1), 125 mm.; Las Lajas, Taboga (17), 
50 to 125 mm. (Alfaro). 
Rhamdia wagneri (Ginther). 
Pimelodus wagneri Giinther, Fishes Cent. Amer., 1869, 474 (Pacific 
and Atlantic Rivers of Panama). 
Rhamdia wagnert Regan, Ann. & Mag. Nat. Hist., 1908, 457 (Rio 
Ballena). 
This species was not obtained by me. 
Arius evermanni Gilbert and Starks. 
Arius evermanni Gilbert and Starks, Mem. Cal. Ac. Sci., 1904, 32, 
pl. 5, fig. ro (Panama Bay) ;— Regan, Ann. & Mag. Nat. Hist., 
1908, 457 (Rio Ballena),. 
This species more properly belongs to the salt-water fauna. In- 
dividuals of this and related species, however, often ascend streams to 
some distance, but probably not beyond the limits of tide water. 
