IV EDITOR'S PREFACE. 



Esq., of Baltimore, on the Orthoptera and Hemiptera ; Dr. John 

 G. Morris, of Baltimore, on the Lepidoptera ; Edward Norton, 

 Esq., of Farmington, Connecticut, on the Hymenoptera ; and Baron 

 E. Osten Sacken, Secretary of the Russian Legation at Washing- 

 ton, on the Diptera. These distinguished entomologists have made 

 specialties of the orders on which they have had the kindness to 

 furnish notes, and their contributions have added much to the 

 completeness of the work. I am greatly indebted, also, to Mr. 

 Alex. E. R. Agassiz for very valuable services, and to Mr. Fran- 

 cis G. Sanborn, whose enthusiasm in making collections, and oth- 

 erwise promoting the progress of the work, has continued unabated 

 from the first. Also to Messrs. James M. Barnard and Edward 

 S. Rand, Jr., who have devoted much time and thought to the 

 details of the work. Many individuals have aided by presenting 

 or lending specimens for illustration, or otherwise, and among them 

 should be mentioned, in addition to the above, Messrs. S. H. Scud- 

 der, of Boston, and J. H. Treat and J. O. Treat, of Lawrence. 

 To prevent any misconception, it should be stated that, in the 

 specimens from which figures 109, 111, 112, 113, 11.5, 116, 

 117, 126, 127, 128, 129, and 130 were drawn, the second pair 

 of feet were displayed instead of the first, and that in figure 

 114 the fore foot should have been omitted. 



The drawings for the steel plates were made by Mr. Antoine 

 Sonrel ; those for the wood-cuts by the Messrs. Sonrel and J. 

 Burckhardt. The engraving as well as coloring of the steel 

 plates is the work of Mr. John H. Richard ; the engraving on 

 wood, that of Mr. Henry Marsh. The work of these artists 

 needs no comment. The printing has been done by Messrs. 

 Welch, Bigelow, & Co., of the University Press, Cambridge. 

 This also speaks for itself. 



No labor has been spared to secure the utmost accuracy and 

 perfection in every respect, and it is hoped and believed that the 

 objects of the Legislature in ordering a new edition of this valu- 

 able treatise have been fully accomplished. 



CHARLES L. FLINT, 



Secretary of the State Board of AijncuUui-e. 

 Boston, January, 1862. 



