Dec. 28, 1916. Fishes or Panama — Meek and Hildebrand. 305 



We have for comparison specimens from western Ecuador, which 

 seem to be identical with the Panama specimens. 



Habitat: Both slopes of Panama, except in the Rio Tuyra Basin, 

 and the western slope of Ecuador. 



48. Hoplias malabaricus (Bloch). 



Esox malabaricus Bloch, Naturgesch. der Ausland. Fische, Pt. 8, 1794, 



149, PL 392 (Tranquebar, locality wrongly given). 

 Synodus malabaricus Bloch & Schneider, Syst. Ichth., 1801, 397. 

 Synodus tareira Bloch & Schneider, Syst. Ichth., 1801, 398, PI. 79. 

 Macrodon tareira Cuvier & Valenciennes, Hist. Nat. Poiss., XIX, 1846, 



508 (Bahia; San Francisco; Amazon; Maracaibo). 

 Erythrinus trahira Agassiz, Spix, Piscium Brasil., 1829, PI. 18 (Bahia). 

 Macrodon trahira Muller & Troschel, in Schomburgk, Reisen in Brit- 



isch-Guiana, Fische, III, 1848, 632. 

 Erythrinus macrodon Agassiz, Spix, Pisciimi Brasil., 1829, 43, PI. 18 



(Alma, Prov. Bahia; San Francisco). 

 Erythrinus microcephalus Agassiz, Spix, Piscium Brasil., 1829, 44 (San 



Francisco). 

 Erythrinus brasiliensis Agassiz, Spix, Piscitim Brasil., 1829, 45, PI, 20 



(Peruaguacu). 

 Macrodon guavina Valenciennes, Humboldt Observ. Zool., II, 1833, 179, 



PI. 48, fig. I. 

 Macrodon auritus Cuvier & Valenciennes, Hist. Nat. Poiss., XIX, 1846, 



519 (Montevideo). 

 Macrodon teres Cuvier & Valenciennes, Hist. Nat. Poiss., XIX, 1846, 



521 (Lake Maracaibo). 



Macrodon patana Cuvier & Valenciennes, Hist. Nat. Poiss., XIX, 1846, 



522 (Cayenne). 



Macrodon aimara Cuvier & Valenciennes, Hist. Nat. Poiss., XIX, 1846, 



523, pi. 586 (Cayenne). 

 Macrodon ferox Gill, Ann. Lye. Nat. Hist. N. Y., VI, 1858, 51 (Trinidad, 



W. I.). 

 Macrodon intermedins .Qmyih.e,T, Cat. Fish. Brit. Mus., V, 1864, 282 



(Cipo River). 

 Macrodon malabaricus Eigenmann & Eigenmann, Cal. Ac. Sci., 2nd 



Ser., 2, 1889, 102. 

 Hoplias malabaricus GiU, Proc. U. S. Nat. Mus., XXVI, 1903, 1015. 



Head 2.15 to 3.3; depth 4.3 to 5; D. 13 or 14; A. 10 or 11; scales in 

 lateral line 39 to 41. 



Body elongate, not much compressed, dorsal region not elevated; 

 head long and low, slightly convex above; interorbital space 3.65 to 



