the Squalus Cornubicus ofGinelin. 83 



me to be fo very particular in my account of this fpccies. If I am 

 wrong in fuppofing it the Porbeagle of Mr. Pennant, I can anfwer 

 for the exadnefs of the dcfcription. It cannot be the Beaumaris 

 ' Sharky becaufe Mr. Davies (upon whofe confummate accuracy any 

 one may imphcitly rely) delcribes it with a blunt nofe; this has a 

 fliarp one. Upon what authority Gmelin joins the Porbeagle and 

 Beaumaris {harks as one fpecies, I do not pretend to know. Per- 

 haps it would be advifable that thofe who have opportunities 

 fliould examine them very minutely. Gmelin defcribes it as having 

 a fold or plait (^plica) on each fide of the tail. In the prefent fpe- 

 cies there was a ftrong elevated line or ridge, but nothing of a plait. 



From the rows of the teeth, the fifliermen who caught it judged 

 it to be two years old. My friend Mr. Whitear told me, that he 

 has fcen them eight feet long, with a triple row of teeth. 



There was nothing in the ftomach. 



The effentjal character of this fpecies may be exprefled as fol- 

 lows : 



S. corpore tereti antice acuta caiidam verfus deprejfo et utrinque atigu- 

 lalo. 



Tab. 15 reprefents an outline of the Sjuahis Cornubicus, one 

 fourth of its natural fize. 



M 2 XIX. Ob. 



