TABLE OF CONTENTS 



PART I. THE STRUCTURE AND Ml- TAM< >RPHOSIS 



OF INSECTS 



CHAPTER I 



PAGES 



THE CHARACTERISTICS OF INSECTS AND THKIK NKAR RI.I.A IIVES. . i 



Phylum Arthropoda I 



List of the classes of the Arthropoda j 



Table of the classes of the Arthropoda -, 



Class Onychophora 4 



Class Crustacea 6 



Class Palaeostracha 



Class Arachnida 9 



Class Pycnogonida 10 



Class Tardigrada 12 



Class Pentastomida 14 



Class Diplopoda 15 



Class Pauropoda 14 



Class Chilopoda 



Class Symphyla 23 



Class Myrientomata 26 



Class Hexapoda 20 



CHAPTER II 

 THE EXTERNAL ANATOMY OF INSECTS 



i. THK STKI i 1 1 KI <>|. i in HODY-U AI i 



a. The three layers of the body-wall ........... - 



The hypodermis ................................. -''' 



The trichogens ............................ ,v 



Thecuticula ...... 



Chitin .............................. V' 



Chitinized and non-chitinized cuticula. ...... v> 



The epidermis and the dermis ..... ; i 



The basement membrane ................. ^ ' 



b. The external apophyses of the cuticula . . \i 

 The cuticular nodules ......... ^ ' 



The fixed hairs . . ^ ' 

 The spines ................. 



c. The appendages of the cuticula . . 

 The spurs . . 



