448 



PATAGONIAN EXPEDITIONS : ZOOLOGY. 



ing a paler edge of dull isabelline ; the lower back, rump and upper tail- 

 coverts olive-brown, lightest on the rump. 



Tail : Velvety brownish black, with a gloss of purple. 



Wings : Scapulars smoky brown, darker at the tips ; wing proper, olive- 

 brown with a decided smoky tinge ; a speculum on the secondaries, me- 



FlG 



Anas cristata, adult male, P. U. O. C. 7822. Profile of head. About }4, natural size. 



tallic coppery in color with bronze green reflections ; each feather has this 

 color on the outer web beginning well toward its base ; the metallic region 

 is some two inches in length, is bordered toward the end of the feather 

 with a velvety black margin a third of an inch wide and the terminal inch 

 on both webs is pure white, making a conspicuous band ; the primaries 



Fig. 229. 



Anas cristata, P. U. O. C. 7822. Bill and 

 head from above, yi, natural size. 



Anas cristata, female, P. U. O. C. 7821. 

 Foot and tarsus, yj, natural size. 



are dark olive-brown ; the under wing-coverts smoky grey with an olive 

 shade ; axillaries white. 



Lower parts : The breast, sides and abdomen dull isabelline, with a 



