CONTENTS 



CHAPTER PAGE 



I. Insects and their near relatives: Branch Arthropoda; Class 

 Crustacea, Crabs, Lobsters, Crayfish, and others; Class Arach- 

 nida, Spiders, Scorpions, Mites, and others; Class Diplop- 



ODA, millipedes; and Class Chilopoda, centipedes I 



II. Class Hexapoda or Insects: characteristics of the class; meta- 

 morphoses of insects; external anatomy of insects; internal 

 anatomy of insects; table for determining the orders of insects; 



list of the orders of insects 22 



III. Order Thysanura, Bristle-tails, Fish-moths, and others 45 



IV. Order Collembola, Spring-tails 47 



V. Order Orthoptera, Cockroaches, Crickets, Grasshoppers, Locusts, 



and others 49 



VI. Order Zoraptera 62 



VII. Order Isoptera 63 



VIII. Order Neuroptera, the Dobson, Aphis-lions, Ant-lions, and 



others 66 



IX. Order Ephemerida, Mayflies 74 



X. Order Odonata, Dragonflies 77 



XL Order Plecoptera, Stoneflies 81 



XII. Order Corrodentia, Book-lice and others 83 



XIII. Order Mallophaga, Bird-lice 85 



XIV. Order Embiidina 87 



XV. Order Thysanoptera,. Thrips 89 



XVI. Order Anoplura, Sucking Lice 92 



XVII. Order Hemiptera, Bugs 94 



XVIII. Order Homoptera, Plant-lice, Scale-insects and others 109 



XIX. Order Dermaptera, Earwigs 125 



XX. Order Coleoptera, Beetles 127 



XXL Order Strepsiptera, Stylopids 176 



XXII. Order Mecoptera, Scorpion-flies and others 178 



XXIII. Order Trichoptera, Caddice-flies 180 



XXIV. Order Lepidoptera, Moths, Skippers, and Butterflies 183 



XXV. Order Diptera, Flies 286 



XXVI. Order Siphonaptera, Fleas 326 



XXVII. Order Hymenoptera, Bees, Wasps, Ants, and others 329 



Index 385 



12 793 



