No. 15. 



Aythya vallisneria. 



Adult Male. Head and greater part of neck brownish red 

 or mahogany color ; top of head and about bill of deeper tint, or 

 blackish ; reddish tone extending farther down neck than in 

 species No. 16 (sometimes confounded with No. 15), and ap- 

 proaching less nearly a true red ; remainder of neck, fore part 



No. 15. Adult Male. 



of body, and rump blackish brown ; wings principally gray. 

 Back, shoulder-feathers, sides, and about vent white, delicately 

 dotted and lined in wavy pattern with dusky gray ( u wrapt in 

 pencilled snow ") ; front of wings with wavy markings in similar 

 fashion. Under parts of body, not previously described, pure 



