19 



c, Webs between all toes (3 webs) 



Fig. 6 GANNET 



Full^webbed Swimmers Gannets, Cormorants, etc., p. 61. 



Fig. 7 MERGANSER 

 (a) Side of bill 

 (6) Top of bill 



Fig. 9 SUEF SCOTER Fig. 10 GOOSE 



d, Bill toothed or flattened (Duck-like). 

 Sieve-billed Swimmers Mergansers, Ducks, Geese, and Swans. . 



. . p. 64. 



e, Nostrils in tubes on top of bill. 



Tube-nosed Swimmers Petrels, etc. 



Fig. 11 PETREL 



. p. 58. 



