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 : 



Order. Sub-Orders. Families. 



1. Aptera 2 7 



Louse. 



2. OrtJioptera 2 10 Earwigs, Cockroaches, 



Grasshoppers, etc. 



Neuroptera 5 10 



Hymenoptera 4 24 



Coleoptera 7 86 



6. Lepidoptera 3 53 



7. Dipt era 6 43 

 Aphaniptera 2 



8. 



Types. 

 Silver Fish or Sugar 



Nerve-winged Insects. 



Ants, Bees, Wasps, etc. 



Beetles. 



Moths and Butterflies. 



Two-winged Flies. 



2 Fleas. 



9. Thysanoptera Thrips. 



10. Hemiptera 4 (6 series) 35 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 Flies, 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. 



