JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 97 



Toes, with small web;, bill, usually under .85. 



Ereunetes pusillus . 

 Semipalmated Sandpiper. 

 See No. 119. 



Ereunetes pusillus 

 (Foot.) 



Toes, with small web; bill, usually over .85. 



Ereunetes mauri. 

 Western Sandpiper. 



See No. 120. 



*GROUP 2. Wing, 3.75 to 4.50 inches long. 

 SECTION 1. Toes, four, with small web at base. 



Bill, under .85; back, not greenish olive; bill, 

 entirely black. Ereunetes pusillus. 



Semipalmated Sandpiper. 

 See No. 119. 



Ereunetes pusillus. 



Bill, over .85 ; back, not greenish olive; bill, black; no white patch 

 on inner web of third primary. Ereunetes mauri. 



Western Sandpiper. 

 See No. 120. 



* For directions for measurement, see page 2 1 . 



