Key to Orders. I9> 



d'. Wing very long, about equal to the total length 

 of the bird, which does not exceed 4.50, pri- 

 maries ten, secondaries six. 



Order Macrochires. 



d'. Wing shorter, equal to about one-half the total 

 length of the bird, bill large, primaries nine. 



Order Coccyges. 



d^. Wings not very long, toes three in front and one 

 behind, the middle and outer toes not united 

 for half their length, lower part of thighs 

 feathered, the tarsus equal to or longer than 

 the lateral toes Order Passeres. 



