CONTENTS 



Page 

 Introduction i 



I. Order Aptera, or Spring-Tails and Bristle- 



Tails ..... 8 



Colletnbola, or Spring-Tails ... 9 



Thysanura, or Bristle-Tails . . . .11 



II. Order Mallophaga, OR Bird and Biting Lice . 14 



III. Order Orthoptera, or Earwigs, Cockroaches, 

 Crickets, and Grasshoppers 

 Forficulida, or Earwigs . . . 



Blattidce, or Cockroaches 

 Gryllidce, or Crickets .... 

 Phasgotiuridce, or Long-Horned Grasshoppers 

 Locusttdce, or Short-Horned Grasshoppers 



16 



17 



20 



22 



25 

 25 



IV. Order Rhynchota, or Bugs, Froth-Flies, 



Aphids, and Scale- Insects ... 28 

 Hemiptera, or Bugs ..... 28 



Homoptera, or Froth-Flies, Aphids, and Scale- 

 Insects ....... 28 



vn 



