>i'i:ririi CI. \ssiKi(ATi'>N. -219 



The same timi'^ will Ix t'uuinl to \h- tlu; case with all the 

 other subspeeie.s, altljoiif^h the ihllereiiees between them are so 

 triMiug, ami so purely techiiieal, while their };cneral resemblance 

 is so great, ami their hal)its >t» entirely similar, niwlcrin^ it 

 impossible to mistake them for lish nf any other family, that 1 

 have lUt-med it supcrtluuus to multiply examples, ur to {;ive 

 specitie descriptions of moie than the first lour species; con- 

 tentiiiix myself \\ith eiiumerat ini^ the others, and indicating the 

 localities in uhieh tliev itri" to be fonnd, which is altoirether 

 sullicii'iit in order to prevent confusion. 



