TABLE OF CONTENTS. 
Page. 
Introduction 7 
Comprehensive Works on North American Insects 9 
Systematic Works on single Orders of Insects : 
Hymenoptera 11 
Coleoptera 17 
Lepidoptera 33 
Diptera 41 
Hemiptera 47 
Orthoptera 53 
Neuroptera 57 
Mallophaga 59 
Thysanura 60 
Myriopoda 61 
Arachnida 63 
List of Entomological Periodicals 67 
List of Works on Economic Entomology 70 
List of Entomological Works published by the U. S. Entomological Commission 
and the C. S. Department of Agriculture 71 
How and where to obtain entomological books 75 
5 
