SALMONIDiE. SALMONIN^E. 287 



than the dorsal ; ventral fin nearest the head ; vent 

 central. 

 C. niloticus. Riipp. Fish of the Nile, i. pi. 3. £ 2. 



Salmo Linn. All the internal parts of the mouth 

 armed with small teeth ; gill-membrane of seven rays ; 

 body lengthened, fusiform ; the belly never serrated ; 

 mouth usually cleft beyond the eyes. 



Mallotus Cuv. Body linear, rather lengthened ; lower 

 jaw longest; teeth on the jaws, palate, and tongue ; 

 pectoral fins rounded ; caudal forked ; ventral fin 

 nearly central, placed beneath the first dorsal ; anal 

 fin lengthened. 



M. Groenlandicus. Bl. 381. f. 1. 



Coregonus* Artedi. Body ovate, lanceolate; head and 

 mouth small, the latter not cleft to the eye; the 

 aperture oblique ; teeth minute^ sometimes wanting ; 

 ventral fin beneath the dorsal. 



C. marcena. Bl. 27. C. maraenula. Jard. i. 3. pi. 1. 



Argentina Linn. Body semi-transparent ; mouth small, 

 transverse ; tongue and vomer furnished with teeth ; 

 those on the former stronger, and hooked ; gills six- 

 rayed. 



A. sphyraena Linn. 



Salmo Linn. Body ovate, lanceolate ; mouth horizon- 

 tally cleft; the lower jaw, in the males, curved up- 

 wards ; jaws, and aU the interior parts of the mouth, 

 armed with pointed teeth ; angle of the mouth ex- 

 tending even to, or behind, the eye ; ventral fin 

 rather behind the anterior base of the first dorsal. 

 Salmo solar, Bl. pi. 20. eperlanus. Bl. 28. f. 2. 



Laurida Arist. Body rather linear, cylindrical, covered 

 with hard and sometimes carinated scales ; mouth 

 enormous, cleft far behind the eyes, which are small, 

 sub- vertical, and placed close to the tip of the snout ; 



* Will not several of the Brazilian salmon, as Anodus Spix, &c., belong 

 to this group ? 



