JIYLETES. 235 



" MvLETES, Cuv. — Caput magnum, comprcssum. Oculi 

 magni, laterales. Os magnum, transversum ; apertum 

 quadratum. Denies maximi, crassi, molares per seriem 

 simplicem in mandibula, per duplicem in ossibus inter- 

 maxillaribus maximis totum marginem superiorem oris 

 conformantibus ; ossa maxillaria superiora minima, ad 

 eommissuram maxillarum perpendicular! a. Lingua lata, 

 apice libera. Membrana brancliiostega radiis 5 tenui- 

 bus. Corpus compress! ssimum, latissimum, squamis 

 minimis abductum ; abdomen carinatum serratumque. 

 Pinna3 mediocres, analis maxima." 



We should observe liere, that the appellation of 

 Pacu^ made into a generic name by some, seems to 

 be a provincial name for several species, — thus the 

 Prochilodi have it applied to them; the fish repre- 

 sented on our next plate, however, is that to which 

 it most properly belongs, and they seem to be held 

 in equal estimation both by natives and Europeans. 



