158 CYCHLA-LIKE CENTRARCHUS. 



the colours, though still bright, are not nearly so 

 vivid ; the angles of the opercle and pre-opercle are 

 more accuminated, and run almost to blunt spines. 

 The scanty notes supply us with the following in- 

 formation : " Rio Negro ; caught in March ; takes 

 bait ; good fish for the table ; grows twelve inches 

 long; worms found in stomach." The colouring 

 will be best understood from the figure. The body 

 is of a deep greenish grey, having indications of 

 seven dark bands, which are interrupted in the 

 middle or on the lateral line ; a single conspicuous 

 black spot is placed near the insertion of the tail ; 

 the lower part of the body, below the pectorals and 

 anterior to the anal fin, is vermilion-red ; the dorsal 

 and anal fins are pale indigo-blue, barred with red- 

 dish bro^vn at their posterior extremities. The 

 formula of the fins are, 



D. 15/12— P. 14— V. 1/5— A. 5/10— C. 16. 



