PISCES. 195 



Sp. Therapon servus Cuv., Holocentrus servus BLOCH, IchtJi. Tab. 238, fig. i, 

 LACEP. Poiss. in. PL 30, fig. 3; Therapon puta GUERIN, Iconogr., Poiss. 

 PL 7, fig. i ; Dules auriga Cuv., Cuv. et VAL. Pom. ni. PL 5 1, species 

 from the Red Sea, the Indian and South Pacific seas. 



Nandus Cuv. Teeth thin, short, crowded in jaws, in vomer and 

 palate-bones. Margin of prseoperculum and interoperculum finely 

 denticulate; operculum with a spine small or none. Rajs of bran- 

 chiostegous membrane six. Mouth protractile. Eyes large. Body 

 high, compressed. Dorsal fin single, deeply incised in front of soft 

 rays. 



Sp. Nandus marnwratus Cuv. et VAL. Poiss. vn. PL 207, from Bengal. 

 This fish almost agrees with the sub-genus Dules of the preceding genus, 

 but differs from it especially in the protractile snout. The genus Anoplus 

 SCHLEGEL may be also united with it. Sp. Nandus anoplus nob., Anoplus 

 SCHL. Faun. Japan., Pise. Tab. vm. 



Priacanthus Cuv. Teeth crowded, thin in jaws and palate- 

 bones. Angle of prasoperculum produced into a denticulate spine. 

 Entire head and body covered with small scales. Branchiostegous 

 membrane with six rays. Eyes very large. Dorsal fin single, con- 

 tinuous, higher posteriorly. Ventral fins ample. 



Sp. Priacanthus macrophthalmus, Anthias macrophthalmus BLOCH, Ichth. 

 Tab. 319, from Brasil; other species are from the Indian Sea, the Southern 

 Pacific, and especially from the east coast of Asia, as Priacanthus japonicus 

 Cuv., VAL. Poiss. in. PI. 50, Priacanthus niphonius Cuv., VAL., Faun. 

 Jap., Pise. Tab. vn. A, &c. 



Ichthelw BAFIN. Teeth crowded, thin in jaws ; palatine-teeth 

 sometimes none. Praeoperculum entire or slightly denticulate. 

 Branchiostegous membrane with six rays. Operculum and cheeks 

 scaly. Dorsal fin single. Body compressed, high. Tail thin, 

 short. 



Compare CDVIEB et VALENCIENNES Poiss. vii. pp. 454 469. To this 

 genus belong fresh-water fishes from America, especially from the northern 

 half of that part of the world. 



Sub-genus Pomotis Cuv. Teeth in palate-bones and tongue none. 

 Prseoperculum denticulate. Operculum with a membranous appen- 

 dage ear-shaped, rounded. Anal fin with three spines, or more 

 rarely with four. 



Sp. Pomotis vulgaris Cuv., VAL. Poiss. m. PL 49, R. Ani., 3d. ill., Poiss. 

 PL 10, fig. 3, &c. Pomotis elongatus HOLBROOK, Journal of the Acad. of 

 Nat. Sc. of Philadelphia, Sec. Ser. in. 1855, PL 5, fig. i, and two others. 



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