PREFACE. 9 



From the reports of Dr. Asa Fitch : Nos. 36, 37, 98, 99, 



301. 



From Dr. A. S. Packard's works : Nos. 16, 110, 113, 117, 



118, 119, 156, 157, 158, 162, 176, 177, 323, 328, 381, 382, 

 383, 384, 385, 386, 387, 388. 



From B. Walsh's first report No. 143 was copied, No. 55 

 from one of Cyrus Thomas's reports. No. 187 from a plate 

 published by W. H. Edwards; Nos. 427 and 430 were 

 copied (reduced in size) from the report of the U. S. Com- 

 missioner of Agriculture for 1880, Nos. 438 and 439 from a 

 treatise on insects injurious to fruit-trees in California, by 

 Matthew Cooke, and Nos. 398, 399, 402, 405, 415, 417, 425, 

 and 437 from a treatise on orange insects, by William H. 



Ash mead. 



The remainder have been drawn from nature and engraved 

 for this work chiefly by the following artists, who have also 

 engraved the copies: H. H. Nichol, of Washington; Wor- 

 thi'ngton G. Smith, of London, England ; H. Faber & Son, 

 and Crosscup & West, of Philadelphia ; and P. J. Edmunds, 

 of London, Ontario. 



Throughout this work, where an author's name, following 

 the scientific name of an insect, is enclosed in parentheses, 

 it is an indication that the authority is for the species only, 

 and that the genus has been changed since the insect was 

 described. This is in accordance with the recommendation 

 of the British Association made some years ago, and is now 



very generally adopted. 



WM. SAUNDERS. 



London, Ontario, Canada, April 11, 1883 



