94 



Ohcrholscr — Description of a New Querqvedida. 



with no otlier species, and bears much the same relation to Q. cj/annpterd 

 that Querquedula pumi does to Q. versicolor. Strangely enough, Querque- 

 dula ajanopiera, despite the vastness of its range, — from British Columbia 

 to the Falkland Islands, — seems to be indivisil)le into races, since there is 

 no difference that Ave can discover in either size or color between birds 

 from the United States and tiiose from Chile or the Argentine Republic. 



The great contrast in size that characterizes this new species is evident 

 from the following millimeter measurements of adult males: 



Querquedula orlnnmus. 



Querquedula cyanoplera. 



