26 Field Museum of Natural History — Zoology, Vol. IX. 



/ / Bill, not narrow; tarsus, scutellate in front 



(transverse scales); toes, four, the front ones, full 

 webbed; hind toes, without decided flap or lobe. 



Family ANATIDiE. Subfamily ANATINiE. 

 River and Pond Ducks. 

 See pages 54, 58. 



Ducks. 



Bill of Duck. 



Bill, not narrow; tarsus, scutellate in front (trans- 

 verse scales ) ; toes, four, the front ones, full webbed; 

 ■^ hind toe. with flap or lobe. 



Family ANATIDiE. Subfamily FULIGULINiE. 



Sea Ducks. 

 See pages 54, 62. 



Lores, feathered; tarsus, reticulate (scales rounded ) ; wing, more 

 than thirteen incJics long; toes, four, the front ones full webbed. 



Family ANATIDiE. Subfamily ANSERINiE. Geese and Brant. 



See pages 55, 71. 



Geese and .Swan. 



Lores, partly bare; tarsus, recticulate (scales rounded); size, 

 large; neck, long; wing, over eighteen inches long; plumage, white 

 or gray. Family ANATID^. Subfamily CYGNIN^. Swans. 



See pages 55, 73. 



