AVES ANATID^.. 



445 



Tail : Above dull blackish, shaded with grey, the feathers below being 

 ashy grey. 



Wings : Black with a decided green luster ; there is a metallic purple 

 speculum on the secondaries, each feather at this point having a sub-ter- 

 minal band of velvety black, rather more than half an inch wide, bordered 

 by a clear white margin, a quarter of an inch broad. This speculum, if 



Fig. 224. 



Fig. 225. 



Anas speadaris, male, P. U. O. C. 8931. 

 Rio Negro, Argentina, March, 1 898. Profile 

 showing color pattern on head and face. 



The same : Rio Negro, Argentina, March, 

 I98. Bill and head from in front. About 

 natural size. 



viewed from well in front, appears metallic green with coppery shades. 

 The primaries are dusky brownish, almost black. The greater coverts are 

 dark greyish brown. The under wing-coverts velvety black and the 

 axillaries white. 



Lower parts : Greyish isabelline, with decided rufescent shading, particu- 

 larly on the breast ; this coloring is broken by obsolete bars of deeper 



Fig. 226. 



Anas speadaris. P. U. O. C. 8931. Tarsus and foot. About y^ natural size. 



rufescent shade. On the sides and flanks each feather has a subterminal 

 dark brown spot more or less irregular in shape and disposition. Under 



