PAGE INTRODUCTION 1 APTERA 27 DIPTERA 33 Nemocera 35 Brachycera 47 HEMIPTERA 90 Heteroptera 90 Homoptera 101 LEPIDOPTERA 138 The Larva, or Caterpillar 138 The Chrysalis, or Pupa 146 The Perfect Insect 165 ORTHOPTERA 284 HYMENOPTERA 313 THYSANOPTERA 400 NEUROPTERA 402 COLEOPTERA 435 INDEX 523