KEY TO THE HIGHER GROUPS. 



k\ Toes only 2 in front, or if 3, the . 

 middle and outer toes con- 

 nected for at least half their 

 length. 

 P. Tail-feathers stiff and more or 

 less pointed, and bill more 

 or less chisel-like. 



Order Pici. (Page 280.) 

 P. Tail-feathers neither stiff nor 

 pointed, and bill not chisel- 

 like. 

 Order Coccyges. (Page 271.) 

 k 1 . Toes 3 in front, 1 behind, the middle 

 and outer toes not united for 

 half their length, lower part of 

 thighs feathered, and tarsus equal 

 to or longer than lateral toes. 

 Order Passeres. (Page 321.) 



