INDEX TO KEY TO FAMILIES. 



WATER BIRDS. 



Group 1. Toes, four, with lol.ate wel> or web on sides <>!' iocs. See page 11. 



Group 2. Toes, four; front toes, palmate (full webbed) ; him! too. not connected 

 with front ones by web. See page \'l. 



Group 3. Toes, four; toto-pahnate (all toes full webbed); hind toe, connected 

 with front cues by web. See page 15. 



Group 4. Toes, four, not full webl.ed ; small web between 1<.es at base, or toes 

 entirely without well ; hind toe, souietiuies very small. See page 17. 



Section 1 Hind toe, raided aliovc level of front toes. See page 17. 

 Section >. Ililid toe, on same level with front toes. See page !'.. 

 Group 5. Toes, three, full well;d; m hind toe. See page -_M . 



Group 6. Toes, three, not full webbed: a small we!, I.eiwerii toe> at l.ase, or toes 

 entirely without web. See page 23. 



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