ANNOTATED LIST OF THE SPECIES 337 
Type: Sudis gigas Cuvier 
Atlantic coast streams, Guianas to Bahia; Amazons 
“Elongate, compressed moderately, head depressed, belly rounded; mouth 
wide, mandible prominent; without barbels; Jaws with an outer series of small, 
conical teeth; broad bands of rasp-like teeth on vomer, palatines, pterygoids, sphe- 
noid, hyoid, and tongue; pectorals moderate; ventrals scaled; gill-membranes not 
united.”’ (Gunther). 
Fig. 37. Continuation of Fig. 36. The flesh being cut into strips, the backbone and 
viscera removed. 
470. ARAPAIMA GIGAS (Cuvier) 
Sudis gigas Cuvier, 1817, Regne Anim., IT, 180; 
Agassiz, 1829, Sel. Gen. et Spec. Pisc. Bras., 31, pl. B; 
Schomburgk, 1841, Fish. Brit. Guiana, I, 198, pl. x1. 
Sudis prrarucu Spix, 1829, Sel. Gen. et Spec. Pisce. Bras., pl. xvi. 
