Cottony Maple Scale — Continued. 
hatching period of, io6. 
history of, in Illinois since 1867, 100 — 
102. 
Illinois counties reported as infested 
by, in 1905, loj, 116. 
in Illinois, 100 — 117. 
infestation by, in Chicago and certain 
suburbs of, 100, 103, 115. 
injuries by, commonly periodical, loo, 
US- 
injury to trees when spraying for, 
112 — 114. 
insect enemies of, 100, 102, 114 — 115, 
117. 
kerosene emulsion for, 106 — 114, 116. 
life history of, 104 — 105, 116. 
protection of roots of trees treated 
with kerosene emulsion for, 113, 116. 
summary concerning, 115 — 117. 
summer insecticide measures for, 106 
— lie. 
table giving data and results of ex- 
perimental summer-spraying for, 109. 
test of death of, 107. 
whale-oil soap solution for, 108, 109, 
no. 
winter insecticide measures against, 
1 10 — 1 12. 
Craig, John, 44, 46. 
Crambus, gasoline blast-lamp used against, 51. 
Crandall, C. S., 80. 
crenulata, Lachnosterna, 154, 163. 
Crows, abundance of, on plowed ground, 157. 
and blackbirds as enemies of White-grubs 
and May-beetles, 156 — 157. 
Cyclocephala, food habits of, 148. 
immaculata, 137. 
injurious species of, found in Illinois, 137. 
Cyniatodera balteata, description of beetle of, 
129. 
of larva of, 130. 
larva of, preying upon larvae of Elm 
Twig-girdler in burrows, 128. 
notes on life history and distribvition of, 
129 — 130. 
D 
nalbey, D. S., i. 
Dalbey, Wm. M., i. 
Davis, J. J., 124, 153, 158. 
Dawson, W. N., 128. 
Dehn, Wm. M., 92. 
Deyo, E. P., and Foster, L. I., 13. 
Dick-cissel, 149. 
Digger-wasps as parasites, 158, 159. 
Dipterous parasites of May-beetles, 163. 
Diseases of White-grubs, 136. 
disjuncta, Macrophthalma, 160. 
Doerr, A. T., :i. 
Dogwood, :2i. 
Cottony Maple Scale found on, 103. 
flamed with gasoline blast-lamp to destroy 
San Jose Scale, 46. 
(lubia, Lachnosterna, 139, 141, 151. 
Earthworm, Lasius alienus feeding on, 26. 
Echinorhynchus gigas as parasite of pigs and 
White-grvibs, 167. 
Eggs of Common Grub -Wasp, 157, 158, 159. 
160. 
of Corn Root-aphis, 8, 14, 16, 20, 21, 22, 
24. 25- 
of Cottony Maple Scale, 104, 106, 115 — ■ 
1 16, 1 17. 
of Elm Twig-girdler, 118, 119, 120, 121, 
122, 123, 124, 126, 127. 
of White-grubs, 137, 138, 139, 146, 150, 
152, 153. 154. 167. 
Elm, American, or White, injviry to, by Elm 
Twig-girdltr, iiC — ui. 
as food plant of May-beetles, 143, 144, 145. 
flamed with gasoline blast-lamp, 52. 
infested by Oberea sp., 127. 
injuries to. by Cottony IMajile Scale, 102, 
103, Ii5. 
Red, apparently immune from injury by 
Elm Twig-girdler, 121. 
Twig-girdler, 118 — 134. 
best time to begin to spray for, 133. 
description of, 133 — 134. 
distribution of, 127 — 128. 
hibernation of, 124. 
insectary notes on, 124 — 125. 
life history and habits of, 122 — 127. 
manner of feeding of adult, 126. 
natural checks on multiplication of, 
128— 131. 
nature and extent of injury by, 120 — 
121. 
oviposition of, 122, 126, 127. 
period of injury by, 121. 
protective measures against, 131 — 133. 
pupation of, 123. 
recognition of injury by, 119. 
Elms, Lachnosterna beetles collected from, 
141. 
ephelida, Lachnosterna, 153. 
Epicauta marginata killed by gasoline blast- 
lamp, 54. 
Euderus lividus, description of adult and 
pupa of, 129. 
larva of, preying upon larv:e of Elm 
Twig-girdler, 128. 
Evergreens liable to injury by White-grubs, 
166. 
Exoprosopa fascipennis as parasite of Com- 
mon Grub ■\\'asp, 160. 
