244 schomburgk's tetragonopterus. 



black spots, and on the anal half of the lower sur- 

 face it is of a paler tint of the bluish grey of the 

 back, the centre of the body longitudinally only 

 being white or silvery; across the centre of the 

 body, in the opposite direction, or pointing between 

 the insertion of the dorsal and anal fins, there is an 

 oval mark of deep black, having a most remarkable 

 and artificial appearance. The dorsal fin is deep 

 bluish green, crossed by two dark bands ; adipose 

 fin olive, and set upon an elevated undulation of the 

 back ; the pectoral and anal fins small, and of an 

 olive tint; the anal fin largely developed, dark 

 bluish green, having the anterior tip broadly marked 

 with black, the posterior edge margined with clear 

 red. The tail at the base is bluish green, shading 

 into black at the upper tip, after which a band of 

 dull red margins the extremity and the centre of the 

 undulated fork, crossing through nearly the middle 

 of the lower lobe, which is of a paler green at 

 its tip. 



D. 25— P. 15— V. 8_A. 39— C. 27— Br. 4— Ribs, 13 pairs- 

 Vert. 34. 



Three species of fishes, which are generally ar- 

 ranged among the Salmon, have next to be noticed, 

 before proceeding to those forms which seem to lead 

 to the Carps or Cyprini, 



