Class 5. PISCES. 



Sub-class I. PAL^ICHTHYES. 

 Order i. CHONDROPTERYGII. 



Sub-order PLAGIOSTOMATA, 



Division SELACHOIDEI. 



Family CARCHARIID-ffi. 



I. Carcharias glaucus (L.). Blue Shark. 



Has frequently been caught off Whitby, and occasionally off 

 other parts of the coast. 



2 Galeus canis Bonap. Common Tope. 



This species is reported to us as migrating from the shore to 

 the open sea. It is common at Scarborough and in Brid- 

 lington Bay, but is not reported from other localities. 



3. Zygaena malleus {Risso). Hammer-headed Shark. 



4. Mustelus vulgaris Miill. &» Henle. Smooth Hound. 



Common in BridUngton Bay and off Scarborough. Not 

 reported elsewhere. 



Fam. LAMNIDiE. 



5. Lamna cornubica {Gm.). Porbeagle. 



Occasional visitant, has been caught off Scarborough and 

 Whitby. This species is described by some authors under 

 the name of ' Beaumaris Shark.' 



