SPECIFIC CLASSIFICATION. 219 



The same thing will be found to be the case with all the 

 other subspecies, although the differences between them are so 

 trifling, and so purely technical, while their general resemblance 

 is so great, and their habits so entirely similar, rendering it 

 impossible to mistake them for fish of any other family, that I 

 have deemed it superfluous to multiply examples, or to give 

 specific descriptions of more than the first four species; con- 

 tenting myself with enumerating the others, and indicating the 

 localities in which they are to be found, which is altogether 

 sufficient in order to prevent confusion. 



