286 CLASSIFICATION OF FISHES^ ETC. 



Erythrinus Gronovius. Body oblong, sub- cylindrical, 

 or very slightly compressed ; the scales large and 

 strong, but deciduous ; head round, obtuse ; the bones 

 of great hardness, but without scales, those on the 

 cheeks rough; mouth very large j jaws armed with 

 a row of formidable conic teeth, alternately small 

 and large, while others on the palate, &c. are numer- 

 ous and small; dorsal fin single^ central, quadrangular; 

 ventral placed beneath it ; pectoral and anal of equal 

 size, and ovate ; caudal broad and rounded : rivers 

 of Tropical America : representing Saurus among the 

 freshwater fishes. 



E. salvus. Agass. Pis. Braz. raicrocephalus. Agass. lb. 

 p. 41. pi. 44. 



unitaniatus5pi:r. Ib.pl. 19. Brazihensis. Spix, pi. 20. 

 macrodon. Agass. lb. pi. 1 8. 



Synodus*^ Gronov. General fonn and structure of 

 Laurida, but there is no second adepoise dorsal ; 

 ventral fin moderate, placed beneath the dorsal. 

 S. Grofiovianus. Sw. Gro. Zoop. pi. 7.. f. 1. 



2. SuBFAM. SALMONIXJE. Salmon. 



Dorsal fins two j", the second adipose ; body with com- 

 pact scales ; jaws generally well furnished with teeth, 



SuDis Cuv. Body lengthened, cylindrical, somewhat 

 anguilliform, covered with very large osseous scales ; 

 head depressed, naked ; the plates bony and corru- 

 gated ; mouth large, transverse ; eyes placed near the 

 crown ; teeth strong, acute ; dorsal fin long, placed 

 close to the caudal, and above the anal ; ventral very 

 small, nearest the caudal ; anal half the length of 

 the dorsal ; caudal small_, round. 



S. gigas Cuv. Spix, pi. 16. 



Chipisudis Sw. Mouth and teeth small ; anal fin longer 



* M. Ciivier has rejected this genus altogether, because he believes that 

 the specimen upon which Gronovius founded the genus, and from which 

 his figure is taken, is but a Salmosaurus. 



f Except in Sudis, which, from the backward position of its dorsal fin, 

 may possibly belong to the Esocince, or pikes. 



