424 ORDER MALACOPTERYGII ABDOMINALES. 



Artedi, and several of his successors, have united 

 under the name of Characinus, all the salmones 

 which have no more than four or five rays to the 

 gills ; but their forms, and particularly their teeth, 

 still vary sufficiently to give rise to several subdivi- 

 sions. Nevertheless, I find in all of them the numer- 

 ous cceca of the preceding salmones, with the divided 

 bladder of the cyprini ; none of them have teeth upon 

 the tongue like the trouts. We establish the follow- 

 ing subgenera : 



CURIMATUS, CuV., 



Have all the external form of thymallus, their little 

 mouth, first dorsal above the ventrals, &c. Some 

 of them even resemble certain thymalli in having 

 teeth, which are visible only through the microscope, 

 and differ from them only in the number of their 

 branchial rays ! . 



Others have at each jaw a range of teeth directed 

 obliquely forwards, trenchant, and the anterior ones 

 longer ; they may be compared to those of Baliste 2 . 



Scopelus (Serpe of Risso); as for the Argentina glossodonta, Forsk., 

 it is a peculiar genus, the Butirinus of Commerson. 



1 Salmo edentulus, Bl. 380. aS*. unimaculatus, Bl. 381. 3. S. 

 tceniurus, Valenc. Ap. Humb. Obs. Zool. ii. p. 166. S. curima, 

 Cuv., Marcgr. 156. Curimate Gilbert, Quoy andGaym. Voyage de 

 Freycinet. Zool. pi. xlviii.f. 1 ; and probably S. cyprino'ides, Gronov. 

 Zooph. No. 378. These are the Pacu, Spix, xxxviii. and xxxix. 

 His Anodus, xl. and xli. differ only in having a mouth a little more 

 cleft. 



2 Salmo fasciatus, Bl. 379. S. Fridericii, Id. 378. 



