X 
Plantain— Con tinued. 
infested by Corn Root Aphis, 61. 
Plant-lice, 52. 
and Mealy Bugs, 55-108. 
points of distinction, 56. 
Ants associated with, 57. 
differences in life history, 56. 
fungus disease, 74. 
number of species infesting corn roots 
in Illinois, 57. 
key to species infesting corn roots, 57. 
rate of multiplication, 56,64. 
See under Corn Leaf Aphis and Corn 
Root Aphis. 
Plowing, late fall, as measure against Corn 
Root Aphis, 80. 
against Wireworms, 36,48. 
to destroy Ants in attendance on 
Corn Root Aphis, 79. 
Plum as food of Hop Plant Louse, 57. 
leaves as food of adult Southern Corn 
Root Worm, 149. 
of May Beetles, 114. 
pom, Rhizobius, 106. 
Poisons, arsenical, effect on Seed-corn, 49. 
for Agono'ierus pallipes, 13. 
for Wireworms, 48,49. 
See also under Insecticides. 
Pollen, 148,158,161. 
Polygonum as food of Corn Root Aphis, 60, 
61. 
infested by Grass Root Louse. 88. 
Polymoechus brevipes dusted with spores 
of Botrytis tenella, 133. 
polyturator, Pelecinus, 124,134. 
Poplar, Lombardy, leaves as food of May 
Beetles, 114. 
Portulaca destroyed by White Grubs, 112. 
oleracea as food of Corn Root Aphis, 61. 
Potash salts for Northern Corn Root Worm, 
162. 
Potassium cyanide for Wireworms, 49. 
Potatoes as food of Pale-striped Flea- 
beetle, 22. 
infested by W 7 heat Wireworm, 37. 
by White Grubs, 109,114. 
by Wireworms, 30. 
prastermissa, Lachnosterna, 139,141. 
Predaceous Insects, 125,126,152,161. 
Prionus Grubs, 146. 
economic procedure, 146. 
imbricornis, 54,146. 
laticollis, 54,146. 
proliferum, Panicum, 105. 
prunina, Lachnosterna, 139,142. 
pubescens, Agriotes, 8,55. 
pulicaria, Chaetocnema, VII. 
Pumpkins as food of adult Northern Corn 
Root Worm, 158. 
of adult Southern Corn Root Worm. 
148. 
Purslane, 33,62,74. 
as food of Corn Root Aphis, 61,65. 
of Pale-striped Flea-beetle, 22. 
Purslane —Co ntinued. 
destroyed by White Grubs. 112. 
infested by Solenopsis debilis, 10. 
by an unidentified larva, 157. 
Pyralis farinalis infesting potatoes, X. 
Raccoon as enemy of White Grubs, 124. 
radicola, Tychea, 94. 
Ragweed, 156. 
as food of Corn Root Aphis, 61. 
of Pale-striped Flea-beetle, 22. 
of Southern Corn Root Worm, 148. 
pollen as food of adult Northern Corn 
Root Worm, 158,161. 
of Southern Corn Root Worm, 158. 
Rape injured by Wireworms, 30. 
to clear earth of Wireworms, 50. 
Raspberries injured by adult Banded Ips. 24. 
leaves eaten by adult Southern Corn 
Root Worm, 149. 
by May Beetles, 115. 
Red Clover blossoms as food of adult North¬ 
ern Corn Root Worm, 158. 
-shouldered Hawk as enemy of White 
Grubs, 123. 
-tailed Hawk as enemy of White Grubs, 
123. 
Remedies and preventives for insect depre¬ 
dations: arsenic, 49. 
arsenical poisons, 13,49,129,132. 
ashes, wood,76,77. 
bisulphide of carbon, 50. 
clean fallow, 50. 
coal-tar, 76. 
collection and destruction, 128,129-131. 
copperas, 49 
and chloride of lime,49. 
corrosive sublimate, 49. 
cultivation of buckwheat,50. 
of mustard, 50. 
of rape,50. 
destruction of Ants’ nests, 75,78. 
fertilizers, 128. 
and insecticides,76,77. 
food lures, 48. 
Fowler’s solution, 49. 
gas-lime, 50. 
infection material, X, 133,134,135,136, 
137. 
jarring trees, 129. 
kainit,50,132. 
kerosene,49,131. 
emulsion, 49,132. 
late fall plowing,36,48,79,80. 
planting of corn, 48,75. 
light-traps, 129,131. 
lime,50,76,77. 
chloride of, 50. 
London purple, 13. 
muriate of potash, 50. 
and petroleum, 77. 
Paris green, 13,18. 
and flour, 15. 
