226 



PISCES 



Nurse Shark 



Gingli/mostoma cirratum (Gmelin) 



Smooth Dogfish 



Mustelus canis (Mitchill) 



Hammer-head Shark 



Sphyrna zygaena ( Linnaeus) 



Sand Shark 



Carcharias littoralis 

 (Mitchill) 



Spined Dogfish 



Squalus acanthias (Linnaeus) 



Tiger Shark 



Galeocerdo tigrinus 

 (Miiller and Henle) 



Thresher Shark 



Alopias vulpes (Gmelin) 



Man-eater Shark 



Carcliarodon carcharias 

 (Linnaeus) 



^Mackerel Shark 



Isurus tigris (Atwood) 



Fig. 104. Sharks of various types. (After Nichols and Breder. Courtesy of N. Y. 



Zoological Society.) 



