PERCID^. PERCINiE. 199 



cule, which is also toothed at its margin ; mouth 

 large^ horizon tal_, lower jaw longest ; caudal lobed^ 

 the lobes rounded. Analogous to Holocanthus. 

 N. spinosus. Cuv. pL 19. 



Lucioperca Cuv, General form of Niphon^ hut with- 

 out any lengthened spines on the sides of the head ; 

 dorsal fins equal; caudal lobed or forked; strong 

 incisors^ mixed with smaller ones, in the jaws, vomer, 

 and palate ; cheeks more or less naked ; preopercule 

 serrated. 



L. Americana. Cuv. pi. 16. 



Enoplosus Cuv. Body short, broad, compressed, oval, 

 resembling the Chsetodons ; mouth oblique ; . dorsal 

 fins two, distinct, but approximating. 



Diploptei'on Cuv. Head large, very high; mouth oblique ; 



dorsal fins united at their base ; ventrals longer than 



the pectorals, and pointed ; caudal round ; scales 



small ; two series of dentations on the preoperculum. 



D. bifasciatum. Cuv. pi. 21. GrifF. pi. 57. fig 2. 



Gramistes Cuv. Body more oval ; head smaller ; scales 

 very small, and covered with the common skin ; mouth 

 oblique ; ventral fin small ; caudal fin rounded ; 

 small spines on the preoperculum and operculum ; 

 but the former is not crenated ; base of the hind 

 dorsal, the anal, and the caudal with scaly sheaths. 

 G. orientalis, Cuv. pi. 27. 



Enoplosus Cuv. General aspect of a Chaetodon ; body 

 broad, much compressed, nearly as high as it is long ; 

 head suddenly narrowed, very small ; mouth small, 

 oblique ; ventral as large as the pectoral ; caudal fin 

 lunated ; dorsal and anal fins falcate ; preoperculum 

 strongly toothed. 



E. armatus. Cuv. pi. 20. 



AsPRO Cuv. Body lengthened, sub-fusiform, as in Perca ; 

 dorsal fins remote ; mouth small, placed beneath the 

 muzzle, which is obtuse, and projects over the under 



o 4 



