16 FISHES OF NEW ZEALAND. 



23. TRACHURUS TRACHURUS. L. CM. 



Horse Mackarel. 



T. novcK zelandice, C. and V. T. trachurus, GiintK., II., 419. Caranx 

 declivis, Jenyns, Toy. Beagle, p. 68., pi. 14, C. sinus obscuri, Forst ? 



D- 8 I ^3^ -'^•2 1 2^;I^- Lat., 70-99. 



Height of the body is about one-fiftli of the total length, which is 

 about four and a half times the length of the head ; the snout is longer 

 than the diameter of the eye, which is one quarter the height of 

 the body ; lower jaw longer ; the maxillary reaches to, or a little beyond, 

 the vertical from the anterior margin of the eye ; the lateral line becomes 

 straight vmder about the fifth ray of the soft dorsal ; pectorals reach 

 beyond the commencement of the second dorsal. 



Back shining bluish gx-eeu, lighter on the sides ; belly silvery white ; 

 a black blotch on the posterior margin of the operculum, and a darkish 

 patch on the ixj^per anterior edge of the pectorals ; iris purplish. 



Common. Distribution same as the genus. 



Caranx, 



Body compressed ; scales very small ; two dorsals ; a spine directed 

 forwards in front of the spinous dorsal ; second doreal and anal more 

 developed than the first ; lateral line vnth anterior curved and a posterior 

 straight portion, the latter with large 2)lates, genei-ally keeled and with a 

 spine ; dentition feeble. 



Nearly all temperate and tropical seas. 



24. CARANX GEORGIANUS, C. and V. CM. 



Trevally. 



Scomber lutescens, Soland. ? G. geoi'glanus, Jenyns, p. 61. Richardson, 

 p. 135, pi. 58. Giinth., II., p. 440. 



D. 8 1 ^ ; A. 2 1 .^ ; L. Lat., 20-25. 



Teeth very small in both jaws, on the vomer and palate ; total length 

 four or four and a lialf times the length of the head, or about three and 

 a half times the height of the body; upper jaw rather longer ; maxillary 

 does not quite reach to the anterior margin of the eye ; breast scaly ; 

 lateral line follows the curve of the back and becomes straight below the 

 middle of the soft dorsal. 



