CONTENTS. 



fuge. 



Introductory note 4 



Comprehensive works most useful for the study of North American insects.. 7 



Bibliography 8 



Systematic works on single orders of insects: 



Hymenoptera 9 



Diptera 18 



Lepidoptera '. 26 



Coleoptera 36 



Hemiptera 57 



Orthoptera '. - 65 



Neuroptera ' 71 



Mallophaga 75 



Thysanura'. 75 



Myriapoda 76 



Arachnida ' 77 



Works on economic entomology 83 



Works on economic entomology published by the U. S. Eutomological Com- 

 mission and by the V. 8. Department of Agriculture 85 



The more important periodicals cited in this bulletin 91 



How to obtain entomological books and pamphlets 94 



5 



