CHAPTER II

INTRODUCTION—HABITS—CLASSIFICATION—STRUCTURE—CHILOGNATHA—CHILOPODA —SCHIZOTARSIA—SYMPHYLA—PAUROPODA—EMBRYOLOGY—PALAEONTOLOGY 29

INSECTA

CHAPTER III

CHARACTERISTIC FEATURES OF INSECT LIFE—SOCIAL INSECTS—DEFINITION OF THE CLASS INSECTA—COMPOSITION OF INSECT SKELETON—NUMBER OF SEGMENTS—NATURE OF SCLERITES—HEAD—APPENDAGES OF THE MOUTH—EYES—THORAX—ENTOTHORAX—LEGS —WINGS—ABDOMEN OR HIND BODY—SPIRACLES—SYSTEMATIC ORIENTATION 83