CONTENTS. 



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 



Millipedes 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 ISOPODA, Termites or White-ants 95 



IX. Order CORRODENTIA, Book-lice and Others 98 



X. Order MALLOPHAGA, Bir4~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 121 



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 



