iv 



CONTENTS. 



PART II. 

 THE INSECT WORLD. 

 CHAPTER 1. 



PAGE 



General Classification 52 



CHAPTER 11. 

 The Thysanura 55 



CHAPTER III. 



The Neuroptera and Pseudo-Neuroptera , . . 58 



Order Ephemeroptera 59 



Order Odonata 60 



Order Plecoptera 63 



Order Platyptera 64 



Order Neuroptera 72 



CHAPTER IV. 

 The Orthoptera 79 



CHAPTER V. 

 The Hemiptera, or Bugs 100 



CHAPTER VI. 

 The Coleoptera, or Beetles 164' 



CHAPTER VII. 

 The Lepidoptera 240 



CHAPTER VIII. 

 The Diptera, or Flies 327 



CHAPTER IX. 

 The Hymenoptera 370 



