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FORMS AND ATTITUDES. 



Fig. 1, Black or Short-tailed Tern Ili/drochclidon nigra surincuneiisls iGmel.); 

 Fig. 2, Caspian Tern Sterna (scher/rava Lepech.; Fig. 3, American Herring Gull 

 Larus argentaius smithsonianus Coues; Fig. 4, Black .Skimmer I?yncfiopi< nigra 

 I. inn. 



