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



Group 4. Birds having wings from 5.50 to 6.75 inches long . See page 103. 

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



middle toes; bill over 1.80 . . " " 103. 

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



middle toes; bill under 1.80 . . " " 104. 



Section 3. Toes, four, without web; bill, over 2 inches long " " 105. 



Section 4. Toes, four, without web; bill, under 2 . " " 105. 



Group 5. Birds having wings from 6.75 to 9 inches long " " 106. 



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



curved upwards or straight; bill, over 2.60 inches . " " 106. 

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



curved upward or straight; bill, under 2.60 and 



over 1.50 inches long . . . . . . " " 108. 



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

 straight; bill, less than i . 50 inches long . . " " 108. 

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



downward; bill, over 2 inches long . . . . " " 108. 



Group 6. Birds having wings from 9 to 12 inches long . . " " no. 



Section i. Toes, four; bill, curved downward . . . " " no. 



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



Family CHARADRIIDvE. Plovers. 



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

 thick; front of tarsus, with small rounded scales See page in. 



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



hind toe . . . . . . " " 112 



Section i. Bill, under .60 inch long . . . " " 112 



Group 2. Wing, 4. 50 to 5. 50 inches long; toes, three, no hind toe " " 112 



Section i. Bill, under .60 inch long . . . . " " 112 



Group 3. Wing, 5. 50 to 6. 7 5 inches long; toes, three, no hind toe " " 112 



Group 4. Wing, over 6.75 inches long . . . . " " 113 



Section i. Toes, three, no hind toe . . . . " " 113 



Section 2. Toes, four . . . . . . . " " 113 



Family APHRIZID^E. Turnstones, etc. 



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



back and rump, white, with black band .... Seepage 114. 



