314 THE COMMERCIAL SEA FISHES OF 



Borlase mentions one taken in Mount's Bay of 100 Ib. 

 weight ; in 1 879 one 1 28 Ib., and 8 feet 3 inches in length, 

 was received in the London market ; one of 1 1 2 Ib. was 

 taken by Mr. Dunn at Mevagissey ; and Yarrell mentions 

 one of 130 Ib. 



SUB-CLASS II.* CARTILAGINOUS FISHES, OR 

 CHONDROPTERYGII. 



ORDER I.- PLAGIOSTOMATA. 

 FAMILY I. SHARKS, or Carchariidce. 



The true sharks can hardly be included among the 

 commercial fishes of the British Isles, as their products are 

 but rarely brought into the market. They are more known 

 and dreaded on account of the injuries they inflict on the 

 fishing interests, by robbing the fishing lines, tearing fish 

 out of the nets, becoming entangled themselves in the nets 

 in which they frequently roll themselves, so as to utterly 

 destroy their subsequent utility. The only uses to which 

 they appear to be put is, in the extraction of oil from their 

 livers when their size is sufficiently large and the appliances 

 are at hand, and their employment as manure. 



FAMILY II. DOG-FISHES, or Scylliida. 

 i. Lesser Spotted Dog-fish (Scyllium caniculd]. 



Names. Spotted and lesser-spotted dog-fish, row-hound, 

 morghi, small spotted dog, and Daw-fish in the Orkneys. 



* Professor Huxley, on anatomical grounds, has come to the con- 

 clusion that the separation of Elasmobranchs, Ganoids, and Dipnoids 

 into groups, apart from and equivalent in rank to Teleostei, is incon- 

 sistent with facts a subject unsuited to discussion in this place, 

 where the generally adopted classification has been adhered to. 



