8 PREFACE. 



Through the liberality of the Council of the Entomological 

 Society of Ontario, permission was granted to have electro- 

 types made from any of the cuts in the Society's collection, 

 and from this source a large number of figures have been 

 obtained. Many of these were purchased by the Society from 

 C. V. Riley, and some are the work of Worthington G. 

 Smith, of London, England, and other English and Ameri- 

 can engravers. 



Nos. 21, 22, 31, 93, 102, 104, 116, 137, 141, 142, 145, 

 169, 199, 201, 205, 206, 291, 292, 305, 321, 332, 347, and 

 348 were purchased from C. V. Riley. 



Nos. 20, 151, 152, 167, and 208 were kindly loaned by A. 

 S. Forbes, of Normal, Illinois. 



Through the kind liberality of the Hon. George B. Loring, 

 U. S. Commissioner of Agriculture, permission was granted 

 to obtain electrotypes of the following, which have appeared 

 in the Commissioner's reports : Nos. 13, 15, 32, 35, 42, 96, 

 108, 114, 115, 126, 181, 195, 248, 270, 286, 287, 288, 377, 

 393, 394, 400, 403, 404, 406, 407, 408, 409, 410, 411, 412, 

 413, 414, 416, 418, 419, 420, 421, 422, 423, 424, 426, 428, 

 429, 431, 432, 433, 434, 435, 436. 



Nos. 8, 25, 63, 109, 134, 144, 329, 338, 350, and 401 

 were purchased from Dr. A. S. Packard. 



By kind permission, the following were copied from Town- 

 end Glover's excellent plates : Nos. 9, 49, 66, 78, 82, 83, 87, 

 111, 121, 146, 147, 148, 150, 155, 163, 202, 209, 236, 237, 

 249, 282, 293, 294, 295, 296, 300, 315, 320, 322, 333, 367, 

 390, 391, 392, 395, 396, 397, 440. 



From Harris's works : Nos. 11, ^^, 120, 159, 174, 188. 



From the reports of C. V. Riley: Nos. 101, 103, 105, 

 107, 228, 229, 230, 378, 379. 



