ACKNOWLEDGEMENTS. 



FIGS. 3, 4, 6, 7, 8, 33, 34, 35, 38, 39, 40, 84, 86, 87, 91, 93-106, 124, 

 126, 130, 131, 132, 142, 144, 146, 151, 180, 191-196, 201, 202, 204, 205, 

 201.;, 207, 208b, 209, 212, 213, 215, 219, 220. 221, 224, 225, 226, 246, 256 

 -260, 267, 320, 321, 332, 333, 379, 404, 408, 409, 42], 422, 442, 455, 480, 

 481, 484, 485, 487, 493, 500, 501, 502, 509, 513, 518, 519, 521, 531, 534, 

 535, 552, 561, 5G2, 576, 579, 593, 601 and 651, were borrowed from the 

 American Entomological Society, at Philadelphia. 



FIGS. 2, 14, 15-24, 27, 48, G3-67, 69, 181, 216, 217, 222, 230, 231, 233 

 -235, 247, 369, 389, 420, 424, 427, 435, 436, 438, 497, 508, 578, 630 and 

 631 were loaned by the Boston Society of Natural History. 



FIGS. 25, 36, 37, 55, 83, 128, 136, 237, 242, 269, 350, 352-357, 362, 368, 

 372, 373, 380, 511, 512, 514, 542. 54:5, 544, 545, 546, 556, 585-587, 589, 

 590, 591, 594, 602, 603, 604 and 605, were borrowed from the report of 

 the Massachusetts State Board of Agriculture for 1862. 



FIGS. 155-165, 169-179, 270, 271, 285-296, 300, 303-306, 345-348, 358, 

 359, i;:;2. 633 and 634, were loaned by the Smithsonian Institution. 



FIGS. 1, 5, 8, 10, 30, 31, 32, 51, 52, 57, 58, 62, 64, 68, 72, 79, 80, 81, 82, 

 85, S9, 92, 110-121, 127, 185, 186, 227, 22S. 239, 248, 250, 252, 262, 263, 

 273, 278, 298, 307-314, 317-319, 322, 324-327. 329-331, 334-343, 361, 

 3G3a, 375, 387, 412, 413, 425, 426, 428, 430, 432, 433, 437, 439, 447-451, 

 456-458, 463, 464, 474, 475, 504, 516, 576, 577, 580-584, 588, 592, 60s, 

 613, 615, 627, 636, 637, 638, 639, 641, 642, 646-649, were taken from the 

 " American Naturalist." 



FIGS. 41, 70, 71, 88, 129, 138, 143, 152, 200, 232, 249, 253, 255, 349, 

 492, 554, 618, and 645 were borrowed from the "Report of the Maine 

 Board of Agriculture for 1862." 



FIGS. 73-78, were kindly loaned by Prof. Jeffries Wyman. 



FIGS. 570, 571, 574, 575, 617 and 635, were loaned by the Illinois 

 Geological Survey. 



I am also indebted to Prof. Sanborn Tenney for the use of Figs. 

 189, 190, 198, 315, 323, 563-567, from his "Manual of Zoology." 



The publishers of Hardwick's " Science-Gossip," London, afforded 

 me stereotypes of Figs, 517, 557, 569, 573, 606, 607. 609-611, 616. 62<i 

 -622, 628, 629 and 640. 



.Electrotypes of Figs. 119, 261, 281, 281r-284, 328, 344, 351, 360, 363, 

 367, 374, 376, 414, 429, 434, 452-454, 466, 468-471, 477, 479, 494, 506 1 . 

 506-', 510, 522-526, 530, 532, 533, 536-541, 547-551, 564, 568, 595-598, 

 were purchased of the publishers of the " American Entomologist." 



The following figures were engraved expressly for the work, viz : 

 Figs. 11, 12, 13, 26. 28, 29, 42, 43-47, 49. 50, 53, 54, 56, 59-61, 80, 107- 



