Colorado Beetle (_Chrysomela decemlineata_) 111 82. Stages of Colorado Beetle 112 83. Cloudy Tortoise Beetle (_Cassida nebulosa_) 113 84. Rape Flea Beetle (_Psylliodes chrysocephalus_) 114 85. Stages of Seven-spotted Lady-bird (_Coccinella septempunctata_) 118 86. Stages of Common Lace Fly (_Chrysopa vulgaris_) 122 87. Head of Honey Bee (_Apis mellifica_) 124 88. Common Wasp (_Vespa vulgaris_) and nest 127 89. Common Sand Wasp (_Ammophila sabulosa_) 129 90. Stages of Yellow-legged Ichneumon Fly (_Microgaster glomeratus_) 133 91. Turnip Saw-fly (_Athalia spinarum_) and caterpillars 135 92. Head of Butterfly 136 93. Scales from Butterfly’s Wing 136 94. Stages of Peacock Butterfly (_Vanessa io_) 138 95. Stages of Cabbage White (_Pieris brassicæ_) 139 96. Garden White (_Pieris rapæ_), male 141 97. Garden White, female and caterpillar 141 98. Green-veined White (_Pieris napi_) 142 99. Dart or Turnip Moth (_Agrotis segetum_) and caterpillar 143 100. Stages of Cabbage Moth (_Mamestra brassicæ_) 146 101. Grass Moth (_Charæas Graminis_) and caterpillar 150 102. Stages of Silver Y Moth (_Plusia gamma_) 151 103. Hop Snout Moth (_Hypena rostralis_) 153 104. Mother-of-Pearl Moth (_Botys margaritalis_) and larva 155 105. Fawn-coloured Pea Moth (_Grapholitha nebritana_) 156 106. Larch Moth (_Coleophora laricella_) 157 107. Wings of a Bug 159 108. Bean Aphis (_Aphis papaveris_) 160 109. Corn Thrips (_Thrips cerealium_) 163 110. Wheat Midge (_Cecidomyia tritici_) 165 111. Barley attacked by Hessian Fly 167 112. Larvæ of Wheat Midge (_Cecidomyia tritici_) 169 113. Stages of Daddy Longlegs (_Tipula oleracea_) 171 114. Rain Breeze Fly (_Hæmatopota pluvialis_) 174 115. Caterpillar Fly (_Tachina fera_) 175 116. Turnip infested by Cabbage Fly (_Anthomyia brassicæ_) 177 117. Ribbon-footed Corn Fly (_Chlorops tæniopus_) 179 118. Stages of ditto 181 119. Wheat Plant distorted by winter generation of ditto 181 120.