PORBKAOLK. 515 



CHONDROPTERYG1I. SQUALWX. 



THE PORBEAGLE, 



OR BEAUMARIS SHARK. 



Lamna Cornubica, Le Squale Nez, CUVIER, Regne An. t. ii. p. 389. 



,, ,, Porbeagle, FLEM. Brit. An. p. 168, sp. 15. 



Squalus Cflrnnbicus, ,, PENN. Brit. Zool. vol. iii. p. 152 & 254, 



pi. 20. 



Shark, DON. Brit. Fish.pl. 108. 

 ,, ,, GOODENOUGH, Linn. Trans, vol. iii. p. 80, 



tab. 15. 



,, JENYNS, Man. Brit. Vert. p. 500 & 501. 



,, ,, NILSS. Prod. p. 116. 



Lamna Cornubica, BONAP. Faun. Ital. fasc. xiii. 



LAMNA. Generic Characters. Two dorsal fins, the first but little behind the 

 line of the pectoral fin ; the second dorsal fin over the anal. Skin smooth. 

 Head pointed ; nose pyramidal ; nasal valves small. Temporal orifices, or 

 spiracles, very small, at a distance behind the eye. Teeth flat, triangular, 

 smooth, sharp, cutting, with a small denticle at the base on each side in adults. 

 Branchial openings large. 



IN the former edition of tins work, I had, with others, 

 considered the Beaumaris Shark distinct from the Porbeagle, 

 but opportunities of examining four specimens which have 

 been taken on different parts of our coast since 1837 induce 



2 L 2 



