41 



LAMNA. 



The snout conical; body disposed to a rounded form, with a promi- 

 nent ridge at the side near the tail; gill openings wide. Teeth long 

 and pointed, with a process ou each side near the root. An anal fin. 



PORBEAGLE. 



Sqtialus cornuhicns, Turton's Linnaeus. 



Lamna cornvhicus, Cuvier. 



Isurus oxyrhyncus, Rafinesque; but his figure is exceed- 



ingly bad. The genus Isurus was 

 founded by Rafinesque, but his de- 

 finition that the lobes of the tail are 

 equal, must not bo taken literally. 

 " cornnhicus, Gray; Catalogue of British Museum. 



Longnez, Lacepede and Risso. 



Lamna cormibica, Fleming; Br. An., p. 168. 



" ■ Jenyns; Manual, p. 500. 



" "- Yarrell; British Pishes, vol. ii, p. r.l5. 



Donovan ; pi. 108, but the figure is not 

 satisfactory. 



« 



In this place it is proper we should notice a fish, which has 

 borne the name of the Beaumaris Shark, from the place in 

 North Wales where it was first taken; and concerning which 

 much doubt has existed among naturalists, as to whether it is 

 a distinct species or a variety of the Common Porbeagle, to 

 which description represents it as bearing a general resemblance. 

 Cuvier regarded it as a separate species; but his authority is 

 of less weight, as he never possessed the opportunity of ex- 

 amining a specimen. Mr. Yarrell, also, in the first edition of 

 his "History of British Fishes," has given it as different from 

 the Porbeagle; but in the second edition of that work, he has 

 VOL. I. G 



