EDITOR'S PREFACE. 



BY a resolve of the Legislature of Massachusetts, 1859, chap. 

 93, I was directed to issue a new edition of Di% Harris's 

 admirable Treatise on Insects Injurious to Vegetation, with suitable 

 additions anJ illustrations. 



By a resolve of the Legislature of 1861, chap. 80, 1 was author- 

 ized to use the plates prepared for the illustration of the edition 

 for the Commonwealth, in the publication of one or more editions 

 designed for a wider circulation than that for the State could be 

 expected to have. 



It was thought best to insert the additions contemplated in 

 the resolve, in the form of foot-notes. No alterations have been 

 made in the author's language, and the additional notes are en- 

 closed in brackets to distinguish them from those in the former 

 editions. Large additions have been made to the text, however, 

 from the author's own manuscripts. These will be found exclu- 

 sively in the chapter upon the butterflies. In giving a somewhat 

 wider significance to the title, I have but carried out the plan 

 adopted by the author in his last revision of the work. 



Professor Louis Agassiz very kindly offered to supervise the 

 drawings, comparing them with the original specimens before en- 

 graving. It is believed that very great scientific accuracy has 

 thus been secured in the illustrations. Special acknowledgments 

 are due to Professor Agassiz for this valuable service, and also for 

 assistance rendered by way of suggestion and advice throughout. 



Acknowledgments are also due to the following gentlemen, who 

 have contributed notes on the subjects named : Dr. John L. 

 Leconte, of Philadelphia, on the Coleoptera ; Philip R. Uhler, 



