ERISMATURIN.E.J 



74 





The genus Oxyura was first instituted by the Prince of Musignano, for the reception ot 

 Ana* rubida, Wils. Mr. Gorier having overlooked it, formed his genus Undina, or Anas 

 Leucocephala, Linn, a bird of the same conformation. Mr. Nuttall having discovered that the 

 name of Oxyura had been before used for a genus of creepers, substituted that of Gymnura for it. 

 The Prince of Musignano had, however, in the appendix to the same work in which he named the 

 'jvmis Oxyura, also called it Erismatura, which name will stand, that of Oxyura having bei a 

 before employed for another genus. 



Affinity. Some of the species in this genus appear to present a slighi approach to the next 

 sub-family, the tail being diminished in length and rigidity, and also in the wings not being so 

 much curved inwards as in the last. 



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