3 LETTER OF SUBMITTAL. 



meager, the first part of tlie work, that relating to Bark-lice, will be 

 found applicable to any region where the Orange is grown, since these 

 universal enemies of the Orange are as cosmopolitan as the plant it- 

 self. This part of the work, moreover, includes, in addition to those 

 species which have been the subjects of original investigation in Flor- 

 ida, such notes as have been jjublished upon the Califoruian species, 

 and which have not as yet made their appearance upon the Orange in 

 the East. 



Of the miscellaneous insects considered in the second part of this re- 

 port, by far the greater number are known only in Florida or Louisi- 

 ana, and are not likely to make their appearance in the Pacific States. 



In a record of observations extending over several years of daily and 

 almost constant work in orange groves, it will not seem strange if many 

 of the facts observed by previous investigators are found repeated in 

 the following pages, and if credit is not always given for priority of dis- 

 covery in matters relating to the habits of insects, such as may beveri 

 fied in every orange grove, more intricate researches, or such as have 

 not been reobserved, are always accompanied by the proper references. 

 In this way contributions of interest to orange-growers have been ex- 

 tracted from the writings of well-known entomologists, and particularly 

 from notes and published treatises on orange insects by Glover, Ash- 

 mead, and Comstock. 



Finally, to your direction and guidance is attributable much of what- 

 ever valuable may result from my work ; and the influence of your own 

 scientific researches, not less than your personal co-operation, has light- 

 ened the labor and made the preparation of this report a pleasant task. 



Respectfully submitted, 



H. G. HUBBARD, 



Special Agent. 



Prof. 0. Y. Riley, 



Entomologist. 



