SALMONID^. CLUPIN^. 291 



ventral fin rather before the first dorsal ; jaws mar- 

 gined by a row of small, equal, and acute teeth point- 

 ing backwards ; caudal lunate. 



X. Cuvierii. Spix and Agass. pi. 42. 



MoRjtfYBYNCHus Sw* Cuv. Body ovate ; the head and 

 snout considerably produced and narrowed ; mouth 

 terminal, very small, opening in a vertical direction, 

 and remote from the eyes ; chin protuberant and 

 terminal ; first dorsal fin central, placed between the 

 pectoral and ventral. 



M. Gronoveii Sio. Gronov. Zooph. pi. 7. f. 2. 



Stebnoptyx Herm, Body short, broad, excessively thin 

 and sub-pellucid ; head and eyes very large ; mouth 

 deep, vertical ; ventral fins nearly obsolete, with a 

 spine in front; dorsal single, in the middle of the back^ 

 with an osseous crest in front ; anal fin long. 

 S. Hermanniana. Cuv. Rege An. pi. 13. f. 1. 



3. SuBFAM. CLUPIN^. Herrings. 



Dorsal fin single, central ; mouth small, oblique ; lips 

 very thin ; teeth minute, or none ; body compressed ; 

 aperture of the gills very large; scales large, deciduous. 



OsTEOGLossuM. Ventral fin long, united to the caudal. 



Osteoglossum Vaudel. Body oblong, linear, greatly 

 compressed; mouth excessively large, obliquely ver- 

 tical, armed with numerous small, acute, and equal 

 teeth ; chin with two cirri : eyes close to the snout ; 

 dorsal fin slightly separated (?) from the caudal and 

 anal, which are united; tongue osseous, covered with 

 small, straight, and truncated teeth. 



O. bicirrhosum. Spix and Agass. pi. 25. 



Notopterus Lac. Ventral fins minute ; anal very long, 

 united to the caudal, and occupying three-fourths of 

 the length of the body ; dorsal fin small, nearly cen- 



* This is the Anastomus of Cuv. ; but that name had been previously be- 

 stowed by Lamarck upon a well-known genus of land shells; the similarity 

 of the mouth to that of Mormyrus induces me to suggest the above name- 



u 2 



