[36 



TRACHIJRUS. 



The body compressed; the lateral line armed with firm plates, whicli 

 have a raised ridge along the middle. Two dorsal fins, with a horizontal 

 spine pointing forward before the first of these fins. Before the anal 

 fin a few spines, either free or joined together with a membrane. 

 Thoracic fishes. 



SCAD. 



HORSE MACKAREL. CANORUM. BUCK MACKAREL. 



Trachurus, Jonston. 



Scomber trachurus, Linn^us. 



WiLLOUGHBY ; p. 290, Tables M. and S. 12. 



Caranx traclmre, Lacepede, Risso. 



" tracliurus, Cuvier, 



Trachurus vulgaris, Fleming; Br. Animals, p. 216. 



" " Jenyns; Manual, p. 367. 



" " Yarrell; Br. Fishes, vol. i, p. 175. 



" trachurus, Gunther; Cat. Br. Museum, vol. ii, p. 419. 



There is perhaps no other fish so widely-distributed through 

 the ocean as this, for it is not only found at times on every 

 shore of the United Kingdom, but northward along the coast 

 of Sweden, and towards the south through the extent of the 

 Mediterranean; and further still — by Madeira across the tropics 

 to the Cape of Good Hope, Australia, and New Zealand; the 

 companion, in these last-named regions, as we are informed, of 

 some other species of the same genus that have not been seen 

 in European seas. Osbeck found it also in China; and speci- 

 mens from the above-named regions of the east and south are 

 preserved in the British Museum, which are not seen to differ 

 in outward appearance or inward structure from others in the 

 same collection that were obtained in our own country. 



With us this species finds shelter in deep water during the 

 colder months of the winter and spring, and does not shew 

 itself within the reach of fishermen until about the beginning 



