10G ORDER ACANTHOPTERYGII. 



Etelis, lid. 



Join to the characters of these same percoides bent 

 teeth in their jaws, but not as in the sandres, in their 

 palatine l . 



Niphons, lid. 



Have the teeth even like the perch, and strong spines 

 at the bottom of the operculum and preoperculum 2 . 



Enoplosus, Lacep. 



Have the characters of the perch ; stronger indenta- 

 tion at the angle of the preoperculum, and especially 

 the body very much compressed, and as well as the 

 two dorsal fins very high vertically 3 . 



Diploprion, Kulil. and Van Hasselt. 



Have, in addition to the characters of the perch, the 

 body compressed, a double indented edge at the bot- 

 tom of the preoperculum, and two spines at the oper- 

 culum 4 . 



Apogon, Lacep. 



Have the body short, and furnished, as well as the 

 operculum, with large scales, which easily fall off; 



1 Etelis carbunculus, ib. pi. xviii. 



2 Niphon spinosus, ib. xix. 



3 Enoplosus armatus, ib. xx. or Chcetodon armatus, J. White. 

 1 Diploprion bifascialum, Cuv. and Val. ii. 21. 



