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REPTILES AND BIRDS. 



The most remarkable species of the Sea Gull are the following : — 



The Great Black-backed Gull {Lanes maximus, Fig. 103) is of 



a pure white, with a black back. It is very common in northern 



Fig. 103. — Black-backed Gull 



Fig. 104. — Grey Gull. 



regions, and habitually visits the shores of the Atlantic to the coast 

 of France. 



The Herring Gull {Larus argentatus) is white, with a blue back. 

 It is not so large as the previous bird. It is seen throughout the 

 year on* the coasts of the Mediterranean and the Atlantic, frequently 

 associated with the Common Grey Gull (Fig. 104). 



