Caniponotus ferrugiiieus, number of workers 
in first year colonies of, 29. 
canadensis, Erigeron, 107. 
Lactuca, 107. 
Carabid larvae as food of Corn-Field Ant, 37. 
Carbolic acid, effect of, on germination of seed- 
corn tested, 9, 13. 
special test on reaction of Corn-Field Ant 
to, 22, 23. 
Carbon bisulphid, effect of, on germination of 
seed-corn tested, 11. 
carinatus, Tetrastichus, 50. 
Carpenter-ant, number of workers in first-year 
colonies of, 29. 
time of appearance of winged males and fe- 
males in colony of, 30. 
Casey, T. L., 114. 
Caterpillars injurious to Clover, 42. 
Cecidomyia leguminicola, 46. 
trifolii, 99. 
Cecidomyiidae, 73. 
cerasaphis, Pra n, 73. 
Trioxys. 73, 80. 
Chalcid larva as enemy of Clover Leaf-midge, 
102-103. 
parasite of Clover Stem-borer, 111. 
parasites of Chrysopa cocoons, 78. 
Chalcididae. 73. 
Chalcids, phytophagous, 39. 
Cheat infested by Clover Hay-worm, 98. 
Chilocorus bivulnerus as enemy of Pea- «>r 
Clover-louse, 73, 74. 
of scale insects, 74. 
Chittenden. F. H., 106, 109, 110. 
Chlorid of lime, effect of, on germination of 
seed-corn tested, 10. 
special test on reaction of Corn-Field 
.\nt to, 22, 23. 
Chrysanthemum leucanthemum as food plant of 
Clover Stem-borer, 107. 
Chrysopa oculata, 77. 
as enemy of Pea- or Clover-louse. 73, 78. 
date of emergence of adult, 78. 
parasites of eggs and cocoons of, 78. 
plorabur.da as enemy of Pea- or Clover- 
louse, 73, 78. 
date of emergence of adult, 73. 
hibernation of, 77. 
rufilabris, as enemy of Pea- or Clover-louse, 
73, 78. 
date of emergence of adult, 78. 
Chrysopidse as enemies of Pea- or Clover- 
louse, 77-78. 
Cicindela repanda probably an enemy of Clo- 
ver Leaf-weevil, 90. 
Clover, Alsike. See Alsike. 
Clover and Alfalfa, inject pests of, 41-1-4. 
citation to general articles on insect 
pests of, 124. 
to lists of species of insect pests of, 
124. 
Clover — Continued. 
Callipterus, 103-106. 
descriptions of different forms of. 103-104. 
distribution of, 103. 
life history of, etc., 105-106. 
subject to attack by Empusa aphidis, 106. 
tabular exhibit of average relative lengths 
of segments of antennae of, 104. 
of observations on successive genera- 
tions of, 103. 
comparison of above exhibit of, 
with same for M. pisi, 105-106. 
Crimson. See Crimson Clover, 
field, beneficial insects of, 42. 
fungous diseases of, 43. 
Hay-worm, 42, 96-99. 
control of, 98. 
descriptions of different stages of, 97. 
distribution of, 96. 
injury by, 96. 
life history and habits of, 97-98. 
literature on, cited, 99. 
moth obtained from dead grape leaves, 96. 
reported from Cheat, mixed with Wheat 
and Timothy, 98. 
injury to, by insects, 41-43. 
insect pests, number and control of, 45. 
insects feeding solely on, 42. 
Leaf-midge, 99-103. 
and Clover Seed-midge distinguished, 100- 
101. 
articles on, cited, 103. 
descriptions of different stages of, 100. 
effect of dryness on development of larva 
of, 102. 
food plants of, 99-100. 
galls of, 100, 101. 
habits of, 101-102. 
life history of, 101. 
natural enemies of, 102-103. 
oviposition of, 102. 
Leaf-weevil, 43, 45, 73, 83-92, 118. 
character of injury by, 83, 89. 
cocoon of, 89. 
control of, 92. 
cooperation of, with Clover Root-borer, 84, 
92, 93. 
descriptions of different stages of, 84-86. 
disease of, 84, 90-91. 
distribution of, 83. 
egg-period, length of, in autum:;, 88. 
European accounts of, 83. 
food plants of and injuries by, 42, 83-84. 
habits of, 88-90. 
hibernation of, 88. 
length of pupal period of, indoors. 86. 
life history of, 86-88. 
literature on, cited, 92. 
locomotion of, 89. 
natural enemies of, 90-91.' 
oviposition of, 87-88, 89, 90. 
variations in color of, 89. 
