CONTENTS 



CHAPTER I 



Insecta 



Myriapoda 

 Arachnida 

 Crustacea 



ARTHROPODA 



PAGE 



A Wasp 1 



A Beetle \ ... 5 



A Fly 7 



A Grasshopper 9 



A Caterpillar 20 



A Centiped 22 



A Spider 24 



A Crayfish or a Lobster 28 



A Crab 42 



A Sow-Bug 46 



An Amphipod 48 



Caprella 50 



Larval Decapods , 51 



A Copepod 53 



Daphnia 56 



A Nauplius Larva 59 



CHAPTER II 

 ANNELIDA 



Polychaeta Nereis 61 



Oligochaeta An Earthworm 67 



CHAPTER III 

 PLATHELMINTHES 



Turbellaria A Planarian Worm 

 Cestoda A Tapeworm . . . 



76 

 80 



