INDEX 



179 



Yarrow, dwarf alpiue, 164. 

 Yellowlegs, 110. 



Zamelodia melanocepliala. 1'. 

 Zapns montanus, 74, 81. 



paciflcus, 99. 



trinotatus, 69. 



trinotatus alleui, 98. 



Zenaidura macroura, 111. 

 Zones, Life, 52-68. 



Alpiue, 67-68. 



Canadian, 61-64. 



Hudsouian, 64-67. 



Transition. 54-61. 



Upper Senoran, 53-54. 

 Zonotricbia leucophrys, 125. 



