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the nest. I have on several occasions witnessed the peculiar saltatory exercises performed by 

 these birds ; and most frequently the males are the performers in this strange ballet. I may 

 remark en passant that the common Crane also indulges, though rarely, in this strange 

 amusement." 



The eggs of the Demoiselle Crane differ from those of the common Crane in being rather 

 smaller, and, as a rule, darker and more clearly marked; but they vary a good deal inter se. 

 Those in my collection, from the Lower Volga and Dauria, vary in size from 3- 4 ^ by 2^, and 

 3M by 2^0" to 3f£ by 2& inches. 



The specimen figured is an adult male from the Volga, in my own collection. 



In the preparation of the above article I have examined the following specimens: — 



E Mus. H. E. Dresser. 

 a, <$ , b, 2, c, pull. Sarepta, Volga (Dr. Stadei'). d, J ad. Seville, Spain (Ruiz). 



