Class IV. L A U N C E. 



inches : the females are longer and tenderer than 

 the males. 



The form of the body is fquare, the fides are 

 rounded, and the angles not (harp : it is neverthe- 

 lefs long and (lender. 



The head is fmall and taper; the under jaw 

 much longer than the upper : the upper jaw is 

 moveable, capable of being protruded, fo that 

 when open the gape is very wide. 



The irides are filvery. 



The dorfal fin runs almoft the whole length of 

 the back, is very narrow, and confifts of fifty- 

 eight rays : the pectoral fins fmall, and have twelve : 

 the anus is placed much nearer the tail than the 

 head, is narrow, and extends almoft to the former. 



The tail is forked, but the lobes rounded at their 

 extremities. 



The color of the back is blue, varying with 

 green : on each fide the back is a narrow dufky line 

 or two. The fides and belly are filvery •, the late- 

 ral line flrait. 



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