WHITE-SHARK: FOX-SHARK. 



59 



t til extremely fleshy ; whilst in the latter the body is short and 

 flat, the pectoral fins immensely extended, and the tail slender. 

 Of the true Sharks, there are several species, of which the White- 





FIG. 281. WHITK SHARK. 



shark is the most notorious. It sometimes attains the length of 

 twenty feet, and its mouth is sufficiently wide to enable it to 

 receive the thigh or even the body of a Man. This species 

 inhabits most of the seas of warm latitudes ; but it is rarely or 

 never seen near our own shores. The Fox-shark, or Thresher, is 



FIG. 282. Fox -SHARK. 



remarkable for the great development of the upper lobe of the 

 caudal fin, into which the vertebral column is prolonged ( 581); 

 this being nearly as long as the entire body. This fish is occasion- 

 ally met with on our own coasts, and sometimes attains the entire 



