INTRODUCTION. 



The insect world is divided into ten orders or general 

 divisions, which are again sub-divided into sub-orders, families, 

 and species, as follows : — 



I. 



Order. 



Aptera 



Sub-Orders. 

 2 



2. Orthoptera 



lo 



Families. Types. 



7 Silver Fish or Sugar 

 Louse. 

 Earwigs, Cockroaches, 



Grasshoppers, etc. 

 Nerve-winged Insects. 

 Ants, Bees, Wasps, etc. 

 Beetles. 



Moths and Butterflies. 

 Two-winged Flies. 

 Fleas. 

 Thrips. 



Scale insects, " Bugs," 



Water Measurers, 



Water Boatmen, 



Greenflies. 



Looking down this formidable list one is relieved to find 



that without more ado it may be reduced from ten to five, if 



we retain only those orders for which we have an immediate 



use, as follows : — 



1. Neuroptera. Nerve-winged Insects, Plates 3, 4, 5, 6. 



2. Hymenoptera. Wasp-waisted Flies, Plate 8. 



3. Coleoptera. Beetles, Plate 7. 



4. Diptera. Two-winged F"lies, Plates i, 2. 



5. Hemiptera. Water Measurers, Boatmen, &c.. Plates 7, 8. 

 Illustrations will be found in the following pages which 



will, we hope, make the characteristics of each class clear to 

 the observant reader. 



