448 



PATAGONIAN EXPEDITIONS I 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- 



FIG. 227. 



Anas cristata, adult male, P. U. O. C. 7822. Profile of head. About % 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. 228. 



FIG. 229. 



Anas cristata, P. U. O. C. 7822. Bill and Anas cristata, female, P. U. O. C. 7821. 

 head from above. % natural size. Foot and tarsus. % 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 



