TENCH. 



381 



fleshy portion of the tail ; the caudal rays not so long as the 

 head; the posterior edge of the tail in young specimens 

 concave, afterwards straight, and finally convex. 



The general colour of the body greenish olive gold, light- 

 est along the whole line of the under surface ; the fins darker 

 brown ; the lateral line elevated, distinct, descending by a 

 curve from the top of the opcrculum to the middle of the 

 body, then passing straight to the centre of the tail. 



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