PREFATORY NOTE 



The Museum gratefully acknowledges the cooperation of the 

 New York Zoological Society in the preparation of the Guide. 

 The author is Mr. Raymond L. Ditmars, Curator of Reptiles 

 in the New York Zoological Park, Bronx Park, who also pre- 

 pared the leaflet upon the local reptiles which was issued with the 

 preceding number of the Journal. Through Director W. T. 

 Hornaday the abundant living material of the Zoological Park 

 was placed at the disposition of the Museum for the purpose of 

 making photographs for the illustrations, and through Director 

 C. H. Townsend similar courtesies were extended at the New 

 York Aquarium, Battery Park. The source of the illustrations 

 is indicated under each figure. 



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