As an aid to the pronunciation of the technical terms used and 

 of the Latin names of insects, the accented syllable is marked with a 

 sign indicating the quality of the vowel according to the English sys- 

 tem of pronouncing Latin. 



Two objects have been kept constantly in mind in the preparation 

 of this book : first, to aid the student in laying a firm foundation for 

 his entomological studies; and second, to make available, so far as 

 possible in the limited space of a handbook, a knowledge of the varied 

 phenomena of the insect world. It is hoped that those who use this 

 book will find delight in acquiring a more intimate acquaintance with 

 these phenomena. 



John Henry Comstock 



Entomological Department 



Cornell University 



August ig24 



