r PREFACE. 5 



/ 



and J. H. Comstock; also those of Doctors W t . Le Baron, A. S. 

 Packard, J. L. Leconte and H. A. Hagen; and I take great 

 pleasure in acknowledging my indebtedness for the informa- 

 tion gleaned from their writings. 



In the preparation of this book I have also been ably 

 assisted by D. W. Coquillett, Esq., late Assistant State Ento- 

 mologist, of Illinois, which has placed me under great 

 obligations to him. 



M. C. 

 SACRAMENTO, CAL., November 1, 1883. 



