92 Field Museum of Natural History — Zoology, Vol. IX. 



Group 4. Birds having wings from 5. 50 to 6. 75 inches long . See 



Section i. Toes, four, a small web between outer and 



middle toes ; bill over 1.80 . . . . " 



Section 2. Toes, four, a small web between outer and 

 middle toes; bill under 1.80 . . . " 



Section 3. Toes, four, without web; bill, over 2 inches long " 



Section 4. Toes, four, without web; bill, under 2 . " 



Group 5. Birds having wings from 6. 75 to 9 inches long 



Section i. Toes, four, with more or less web; bill, 



curved upwards or straight ; bill, over 2 . 60 inches " 



Section 2. Toes, four, with small web; bill, slightly 

 curved upward or straight; bill, under 2.60 and 

 over 1 . 50 inches long . . . . . " 



Section 3. Toes, four, with small web; bill, nearly- 

 straight; bill, less than 1 . 50 inches long . . . " 



Section 4. Toes, four, with small web; bill, curved 



downward; bill, over 2 inches long . . . . " 



Group 6. Birds having wings from 9 to 12 inches long . . " 



Section i. Toes, four; bill, curved downward . . . " 



Section 2. Toes, four; bill, curved upward or nearly straight •• 



page 103. 



" 103. 



" 104. 



" los. 



" 105. 



" 106. 



" 106. 



108. 



108. 



108. 

 no. 

 no. 

 III. 



Family CHARADRIIDtE. Plovers. 



Toes, three (one exception, Black-bellied Plover) ; bill, comparatively short and 



thick; front of tarsus, with small rounded scales 



Group i. Wing, 3.75 to 4.50 inches long; toes, three, no 



hind toe . . ..... 



Section i . Bill, under . 60 inch long .... 

 Group 2. Wing, 4 . 50 to 5 . 50 inches long; toes, three, no hind toe 



Section i. Bill, under .60 inch long .... 

 Group 3. Wing, 5 . 50 to 6 . 75 inches long; toes, three, no hind toe 

 Group 4. Wing, over 6.75 inches long .... 



Section i. Toes, three, no hind toe .... 



Section 2. Toes, four . . .... 



See page in. 



Family APHRIZIDtE. Turnstones, etc. 



Bill, shorter than head and homy at tip; toes, four; lower 



back and rump, white, with black band .... See page 114. 



