TABLE OF CONTENTS 



PART I. THE STRUCTURE AND METAMORPHOSIS 

 OF INSECTS 



CHAPTER I 



Pages 



The Characteristics of Insects and Their Near Relatives i 



Phylum Arthropoda i 



List of the classes of the Arthropoda 2 



Table of the classes of the Arthropoda 3 



Class Onychophora 4 



Class Crustacea 6 



Class Palaeostracha 8 



Class Arachnida 9 



Class Pycnogonida 10 



Class Tardigrada 12 



Class Pentastomida 14 



Class Diplopoda 15 



Class Pauropoda 14 



Class Chilopoda 28 



Class Symphyla 23 



Class Myrientomata 24 



Class Hexapoda 26 



CHAPTER II 

 The External Anatomy of Insects 29 



I. the structure of the body-wall 



a. The three layers of the body-wall 29 



The hypodermis 29 



The trichogens 3° 



The cuticula 3" 



Chitin 30 



Chitinized and non-chitinized cuticula 30 



The epidermis and the dermis 3^ 



The basement membrane 3 1 



b. The external apophyses of the cuticula 31 



The cuticular nodules 3^ 



The fixed hairs 3i 



The spines 32 



c. The appendages of the cuticula 32 



The spurs 32 



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