iv EDITOR'S PREFACE. 



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

 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 

 R. 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 done much to make 

 the work complete. I am greatly indebted, also, to Mr. Alex. E. 

 R. Agassiz for very valuable services, and to Mr. Francis G. San- 

 born, whose enthusiasm in making collections, and otherwise pro- 

 moting 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 speci- 

 mens for illustration, or otherwise, among whom should be men- 

 tioned, in addition to the above, Messrs. S. H. Scudder, J. H. 

 Treat, and J. O. Treat. To prevent any misconception, it should 

 be stated that, in the specimens from which Figs. 109, 111, 112, 

 113, 115, 116, 117, 126, 127, 128, 129, and 130 were drawn, the 

 second pair of feet were displayed instead of the first, and that 

 in Fig. 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 and 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 Agriculture. 

 BOSTON, December, 1861. 



