CLASS PISCES. 427 



and dentated teeth as the preceding, but their body is 

 oblong, and neither carinated nor dentated. Their 

 maxillary has very round small teeth \ 



Myletes Cuv., 



Are remarked for very singular teeth, in a triangular 

 prism, short, rounded at the crests, and the upper 

 face of which is hollowed by mastication, so that the 

 three angles there form three salient points. The 

 mouth, but little cleft, has two ranks of these teeth 

 in the intermaxillaries, and a single one at the lower 

 jaw, with two teeth behind ; but the tongue and 

 palate are smooth ; the maxillaries placed over the 

 commissure have no teeth. 



Some of these fishes have the elevated form, the 

 vertical falciform fins, the spine inclining forward, and 

 even the trenchant and dentated belly of the serra- 

 salmes, with which we would willingly unite them, 

 were it not for their teeth. There are some of them 

 which also have the couchant spine in front of the 

 dorsal 2 . 



Some very large ones are found in America, which 

 are good eating 3 . 



1 Chalceus macrolepidotus, Cuv. Mem. Mus. IV. pi. xxi. f. 1. 

 Ch. opalinus, Id. ib. V. pi. xxvi. f. 1. Ck. angulatus, Spix, xxxiv. 



2 Myletes rhombdidalis, Cuv. Mem. du Mus. iv. pi. xxii. f. 3. 



3 Besides the preceding, Myl. durivenlris, ib. f. 2. M. brachypo- 

 mu,s, ib. f. 1. M. meter opomus, ib. pi. xxi. f. 3. M. paco, Humb. 

 Obs. Zool. ii. pi. xlvii. f. 2. 



