ACKNOWLEDGMENTS. 



I am under great obligations to Professor Riley, Professor Comstock, Mr. 

 E. J. Wickson, and Mr. J. J. Rivers, of Berkeley, Mr. D. W. Coquillett, of 

 Los Angeles, and especially to Mr. Albert Keobele, of Alameda, for assist- 

 ance rendered me in identifying insects in the past two years. The electro 

 cuts of the Fluted Scale, in its various stages, the Fall Web Moth, the Cod- 

 lin Moth, the Parasite of the Fluted Scale, and that of two Gas Fumigators 

 were kindly loaned by Professor Riley. To Mr. Robert J. Cooke my thanks 

 are due for the loan of a number of wood cuts. To the "Pacific Rural 

 Press " my thanks are also due for the loan of a great number of cuts, and 

 other favors shown me. (W. G. K.). 



