LABRAX. 97 



and it will remain optional with systematists to 

 retain it here, or in its former place. It differs 

 from Perca^ in having scales upon the opercles, 

 absence of teeth on the subopercles, inter-opercles, 

 and suborbitary bones, by the double spine upon 

 the opercles, and by the very small close set teeth 

 which cover the greater part of the tongue. The 

 most common species is 



