84 THE BIRDS OF NORTH AMERICA, 



reduced to a mere nail, and sometimes entirely wanting ; 

 front toes webbed. 



Family 7. — DiomediidoB. Albatrosses; 4 species. 



Family 8. — ProcellariidcE. Fulmars, Petrels, and 

 Shearwaters ; 28 species. 



ORDER IV.— STEGANOPODES (TOTIPAL^IATE 

 SWIMMERS). 



Toes four ; all connected by webs. 

 Fajmily 9. — Phaethontidce. Tropic Birds ; 2 species. 

 Family 10. — Sulidce. Gannets ; 6 species. 

 Family 11. — Anhingidce. Darters ; 1 species. 

 Family 12. — Phalacrocoracidce. Cormorants; 6 spe- 

 cies. 

 Family 13. — Pelecanidce. Pelicans ; 3 species. 

 Family 14. — Fregatidce. Man-o'-War Birds; 1 species. 



ORDER v.— ANSERES (LiAMELLIROSTRAL. 

 SWIMMERS). 



Toes four, the front ones fully webbed ; tarsus not flat- 

 tened as in the Grebes ; bill with toothlike projections, 

 fluted ridges, or gutters on its sides. 



Family 15. — Anatidce. Ducks, Geese, and Swans; 54 

 species. 



ORDER VI.— ODONTOGLOSS^ (LAMELLIROSTRALi 

 GRALLATORES). 



Toes four, the front three webbed ; bill with toothlike 

 ridges as in some Ducks, the end half bent downward ; 

 legs long ; tarsus 12 '00 inches or more in length. 



Family 16. — Phoenicopteridce, Flamingoes ; 1 species. 



ORDER VII.— HERODIONES (HERONS, STORKS, 

 IBISES, ETC.). 



Toes four, all on the same level, slightly or not at all 

 webbed ; lores bare ; legs and neck generally much 

 lengthened. 



