v. 



B. Three toes only ; hind toe 



absent ; toes free or not com- 

 pletely webbed. 



a. Lower portion of thighs 



clothed with feathers. 

 a 1 . Shanks covered with trans- 

 verse scales before and 

 behind Hemipodes (Button Quails) . 



b 1 . Shanks covered with small 



scales Otidse (Bustards). 



b. Lower portion of thighs naked Limicolae (Waders) [in part] . 



C. Two toes only ; wing not used 



for flight Struthiones (Ostriches). 



