CONTENTS. 



CHAPTER PAGE 



I. Zoological Classification and Zoological Nomenclature... i 

 II. Insects and their Near Relatives : Branch Arthropoda ; 

 Class Crustacea, Crabs, Lobsters, Crayfish, and 

 Others; Class Arachnida, Spiders, Scorpions, Mites, 

 and Others; and Class Myriapoda, Centipedes and 

 M illipedes 9 



III. Class Hexapoda or Insects: Characteristics of the Class; 



Metamorphoses of Insects ; External Anatomy of In- 

 sects ; Internal Anatomy of Insects ; Table for Deter- 

 mining the Orders of Insects; List of the Orders of 

 Insects 48 



IV. Order Thysanura, Bristle-tails, Spring-tails, Fish- 



moths, and Others 82 



V. Order Ephemerida, May-flies 86 



VI. Order Odonata, Dragon-flies 89 



VII. Order Plecoptera, Stone-flies 93 



VIII. Order Isoptera, Termites or White-ants 95 



IX. Order Corrodentia, Book-lice and Others 98 



X. Order Mallophaga, Bird-lice 100 



XI. Order Dermaptera Earwigs 102 



XII. Order Orthoptera, Cockroaches, Crickets, Grasshop- 

 pers, Locusts, and Others 104 



XIII. Order Physopoda, Thrips 119 



XIV. Order Hemiptera, Bugs, Plant-lice, Bark-lice, and 



Others 12 1 



XV. Order Neuroptera, the Dobson and Others 175 



XVI. Order Mecaptera, Scorpion-flies 184 



XVII. Order Trichoptera. Caddice-flies 186 



XVIII. Order Lepidoptera, Moths, Skippers, and Butterflies. . 191 



XIX. Order Diptera. Flies 413 



XX. Order Siphonaptera, Fleas 490 



XXI. Order Coleoptera, Beetles 494 



XXII. Order Hymenoptera Bees, Wasps, Ants, and Others.. 599 



Index and Glossary 679 



ix 



