158 



PISCES. 



Carcharias (Cuv.). Shark. Head pointed, flat- 

 tened ; teeth flat, pointed, cutting, notched at the 

 edges ; no spiracles. 



C. vulgaris. Fig. 236 ; ^ n. s.' 

 glaucus. 



236 



237 



Scyllium (Cuv.). Dog-fish. Head blunt ; nostrils 

 near the mouth, continued in a groove to the lip ; 

 spiracles distinct ; teeth with a long point, and a 

 shorter one on each side ; two dorsals, both behind 

 the middle. 



S. canicula. Fig. 237 ; J n. s. 

 catulus. 

 melanostomum. 



