TUNNV. 



139 



the origin of the last ray of the second dorsal fin, and is 

 followed by nine finlets : the tail crescent-shaped ; the mem- 

 brane forming the lateral horizontal ridge on the fleshy por- 

 tion of each side of the tail is produced, forming part of a 

 circle. 



All the upper part of the body of the Tunny is very dark 

 blue ; the part of the corslet marked with scales is much 

 lighter; the sides of the head white ; the whole of the belly 

 greyish white, spotted with silvery white ; these spots are 

 elongated towards the shoulders and flanks, but rounded over 

 the spaces between. The first dorsal fin, pectorals, and ventrals, 

 are black ; the tail paler ; second dorsal and anal fins almost 

 flesh colour, tinted with silver ; the finlets above and below 

 are yellowish, tipped with black. The figure is taken from 

 the plate of Cuvier and M . Valenciennes, who consider most 

 of the fiffures of this fish more or less incorrect. 



