expressing his sincere thanks to all persons that have aided 

 him in many ways in his work. Especial thanks are due to 

 His Excellency, Governor John Lind, who always took great 

 interest in the work of the Entomologist, and also to the 

 different newspapers, who with unfailing courtesy published 

 all articles written for the instruction of the farmers in re- 

 gions infested by injurious insects. The Chicago, St. Paul, 

 Minneapolis andOmaha, the St.Paul and Duluth.the North- 

 ern Pacific, the Minneapolis and St. Louis, the Great North- 

 ern, and the Minneapolis, St. Paul & Sault Ste. Marie Rail- 

 road Companies also deserve thanks for their liberality in 

 furnishing free transportation over their roads whenever 

 such was asked. 



The descriptions of many of the insects given are taken 

 from a number of sources, but mainly from the excellent 

 works of Saunders, Smith, Comstock, Forbes, and of the 

 Annual Reports of the Division of Entomology. Most of the 

 illustrations are old, and many w^ere kindly loaned by Dr. 

 L. 0. Howard, Chief of the Entomological Division of the 

 Department of Agriculture. The Art Engraving Co., of St. 

 Paul, prepared some of the illustrations for the printer, and 

 deserves credit for its good work. 



Otto Lugger. 



