TABLE OF CONTENTS. 



PART I. 

 INSECTS. 



CHAPTER PAGE 



I. Introduction to insects . . . . ... .. .- i 



II. Special senses of insects ........ 7 



III. Vital processes of insects. ....... 20 



IV. Development and metamorphosis .. ..... . 32 



V. Insects and their classification ...... 42 



VI. General suggestions for field work on 



insects. . .... . . . .. , . . . . ., . . 46 



VII. Field work on Coleoptera ...:... 59 



Coleoptera 67 



VIII. Field work on orthoptera ., . . 79 



Orthoptera , ...... . ..... ,, . . 87 



IX. Field work on hemiptera . 98 



Hemiptera . . . ... ..... . . . . 107 



X. Field work on lepidoptera . . . . . . . 119 



Lepidoptera . . . . . . . . , . . . . 125 



XI. Field work on hymenoptera ... . . . 139 



Hymenoptera ... ... . ....... 149 



XII. Field work on diptera . . . ... . . . 176 



Diptera . . . . . , .. . . . . . ... 183 



XIIL Odonata . . . . . . . ... . .. . . 207 



XIV. Ephemerida 213 



XV. Plecoptera .............. 217 



XVI. Neuroptera ....... . . . . . . 221 



XVII. Siphonaptera ... . .5.. ..;... 226 



vii 



