CIIALCEUS ROTUNDATUS. 



209 



*' Caput mediocre, supra latum, lateraliter subcompressum. 

 Oculi magni, laterales. Os mediocre, transversum, apertum, 

 quadratum ; mandibula prominens. Dentes aeuti, minutissimi 

 in parvis ossibus maxillaribus lateralibus et in serie anteriore 

 ossiimi inter-maxillarium totum labium superius in medio susti- 

 nentium ; in mandibula et in serie posteriore ossium inter- 

 maxillarium, dentes maximi, multicuspides, cuspide medio 

 majori, magis prominente. Lingua papillosa. Membrana bran- 

 cliiostega radiis 4 gracilibus. Corpus latum, compressum, 

 squamis magnis obductum. Pinnae mediocres, analis latis- 

 sima." 



Chalceus rotundatus. — L. Geral, Araisiri. 

 Schomh. Drawings^ No. 54. 



'SWmm 



.J ^-t^^:y;j.y-)v/,yjO 



•^^' 



.hJ 



C. angulatus, Spix. 



C. rotundatus. 



This fish seems nearly allied in general form, and 

 in the position of the fins, to the C. angulatus of 







