PISCES. 99 



Epicyrtus MUELL. Teeth conical, unequal, in single row, inter- 

 rupted in intermaxillary bone, supramaxillary and lower jaw. 

 Palate smooth. Branchiostegous membrane with four rajs. Body 

 compressed, with abdomen not serrate. Ventral fins near to 

 pectoral. 



Sp. Epicyrtus gibbosus MUELL., Saltno gibbosus L., GRONOV. Mus. Ichth. 

 Tab. i. fig. 4, Cuv. et VAL. Poiss. xxii. PI. 636; Surinam. 



VALENCIENNES is of opinion that the genus Exodon MUELL. ought not to 

 be separated from this. 



Chalceus CUT. Teeth short, multicuspidate, in double or treble 

 row in upper jaw, double or single row in lower jaw. Palate 

 smooth. Body compressed, with abdomen not serrate. Scales 

 large. Branchiostegous membrane with four rays. 



Chalceus Cuv., Brycon MUELL. and TROSCH. Teeth in a triple 

 row in upper jaw, double in lower. Abdomen rotundate. 

 Sp. Chalceus macrolepidotus Cuv., Mem. du Mus. IV. PI. 21, fig. i. 



Tetragonopterus ARTEDI, MUELL. Teeth in double row in upper 

 jaw, in single row in lower jaw. Abdomen rotundate. 



Sp. Clialceus Artedii, Coregonus amboinensis ARTEDI, Descr. specierum Pise. 

 p. 44, SEB^f T&esawr. in. Tab. 34, fig. 3, &c. 



Brydnus VALENC. 



Chalcinus YALEXC., Chalceus MUELL. Double row of teeth in both 

 jaws. Abdomen carinate. 



Sp. Chalceus branchipomus, Chalcinus branchipomus VALENC., Chalceus 

 angulatus SPIX. 



Gasteropelecus GRONOV. Teeth tricuspidate, in intermaxillary 

 bone in a double row, in single row in lower jaw. Teeth of supra- 

 maxillary bone conical, in a single row. Palate smooth. Body 

 compressed, with abdomen convex, carinate. Ventral fins very 

 small. Scales small. 



Sp. Gasteropelecus sternicla PALL., Clupea sternida L., GRONOV. Mus. 

 Ichth. Tab. vii. fig. 5, PALLAS Spirit. Zool. vin. Tab. 3, fig. 4 ; Surinam. 



Myletes Cuv. Teeth prismatic, tricuspid, in a double row in 

 intermaxillary bone; teeth of lower jaw thick, with crown flat- 

 tened, the two middle mostly conical, forming a second row. Su- 

 pramaxillary bone edentulous. Palatine teeth none. Body com- 

 pressed. 



72 



