80 



FISH GALLERY. 



[Case 16.] which never enters salt water. It is locally distributed in Central 

 and Northern Europe and North America ; it is one of the best 

 freshwater fishes, and exceeds a length of three feet. 



Fig. 65. 



The Burbot {Lota vulgaris 



The Ophidiidce are small Gadoids with more or less elongated, 

 naked, or scaly body. The " Sand-eels" or "Launces" {Ammo- 

 dytes, fig. 66) occur on the British coast, and are well known 



Fiar. 66. 



The Sand-eel {Ammodytes lanceolatus) . 



for the incredible rapidity with which they bury themselves in the 

 sand • they are much sought after for bait. 



The Macruridce are deep-sea Gadoids of curious shape, occurring 

 at depths of from 120 to 2600 fathoms. This family, known a few 

 years ago from a few species only, proves to be one which is 

 distributed over all oceans, occurring in considerable variety and 

 great abundance. About 40 species are known, of which many 

 attain a length of three feet. 



