160 ORDER ACANTHOPTERYGII. 



Amphiprion, Bl., Schn. 



The preoperculum and the three opercular pieces den- 

 ticulated, the latter even furrowed ; a single range of 

 obtuse teeth. I greatly reduce the number of species 

 of this genus as composed by Bloch, type Amph. ephi- 

 pium, Bloch \ 



Premnas, Cuv. 2 



One or two stout spines on the infra orbital, and the 

 preoperculum denticulated. 



Pom acentrus, Lacep. 3 



Preoperculum denticulated, operculum unarmed; a 

 single range of trenchant teeth 4 . 



1 Amph. ephippium, Bl. 250.2; Am. bifasciatus, Bl. 316. 2; 

 Am.polymnus, B1.316. 1 ; Am. percula, Cuv., oxLutj. perchot, Lacep. 

 iv. 239. Klein. Mis. IV. xi. 8 ; Am. leucurus, Cuv. Renard. vi. 49,. 

 and several new species. 



2 Chcetodon biaculeatus, Bl. 219. 2. which is also Holocentre 

 sonnerat, Lacep. iv. 391 ; and Lutjanus trifasciatus, Bl. Schn. 567, 

 and. Kceehbreuter, Petersburgh Trans. X. viii. 6. Seba III. xxvi. 29. 

 is a variety of it ; Pr. unicolor, Cuv. Seb. III. xxvi. 19, which is 

 also La Scorpene aiguillonnee, Lacep. iii. 268. 



3 We define them differently from Lacepede, and greatly diminish 

 their number by divisions. 



4 Chcetodon pavo, Bl. 198. 1., which is the Pomacentre paon, 

 Lacep., and his Iloloc. diacanlhe, iv. 338. Pomacentrus, Quoy and 

 Gaym., Voy. Freycin., pi. lxiv. f. 2. P. punctatus, ib. 1. P. emar- 

 ginatus, Seb. III. xxvi. 26, 27, 28. The Hoi. negrillon, Lacep. 

 iv. 367- 



