CONTENTS. 
vii 
Genus IY. Anas. Duck. 
Mallard, - 
Dusky Duck, - 
Brewer’s Duck, 
Gadwall Duck, 
American Widgeon, 
Pintail Duck, 
Wood Duck. — Summer Duck, 
American Green-winged Teal, 
Blue-winged Teal, * 
Shoveller Duck. — Micoine, • 
- 
* 
* 235 
Boschas, • 
- 236 
obscura, - 
- 244 
Breioeri, - 
- 252 
strepera, - 
- 254 
americana, 
- 259 
acuta, 
- 266 
sponsa, 
- 271 
carolinensis , 
- 281 
discors, 
- 287 
clypcata , - 
- 293 
