47 



Bethune, C. J. S., xiii, 107. 

 Beutenmiiller, Wm., xxiii, 32, 74, 78, 



167, 171, 172. 

 Bibio larvae, infection experiment with, 



xix, 69. 

 bicarnea, Agrotis, xvi, 87. 

 bicolor, Dolerus, xiv, 100. 



Rhynchites, xvi, 75. 

 bicornis, Tipula, xvi, 78; xxiii, 161. 

 Bidens as food plant of Common Negro- 

 bug, xxi, 100. 

 frondosa, injury to, by Soft Maple 



Bark-louse, xiv, 104. 

 sp. infested by Negro-bug, xvi, 51. 

 biennis, Oenothera, xiii, 169. 

 bif oveolatum, Ophion, xviii, 125 ; xxiv, 



161. 

 Bigelovia, Nysius minutus on, xxi, 95. 

 Bill-bug, Clay-colored, xvi, 59, 69; xxii, 

 1, 9-17; xxiii, 229. See Sphenopho- 

 rus ochreus. 

 Corn, Misc. Ess., 109. 

 Little Brown, or Blue-grass, xxii, 



3-8. See Sphenophorus parvulus. 

 Timothy, xxii, 22; xxiii, 229. See 

 also Timothy bill-bugs. 

 Bill-bugs, Corn, xvi, 58-74, 75 ; xxiii, 12, 

 52-57, 115, 192, 229. 

 bibliography of, xxii, 23-26. 

 distribution of, xxiii, 56. 

 in Illinois, xxii, 1-26. 

 injuries to Corn bv, xxii, 1, 2, 3; 

 xxiii, 7, 11, 17, 52, 55-56, 57. 

 See also under various Sphe- 

 nophorus species, 

 to grass and grain by, xxiii, 56. 

 life history of, xxii, 2; xxiii, 56-57. 

 measures against, xxii, 1, 3; xxiii, 57. 

 timothy, injury to Corn by, xxiv, 1-7. 

 (See also under Sphenophorus.) 

 bimaculatus, Pteromalus, xvii, 5. 



Tetranychus, xxi, 58; xxiii, 14, 224. 

 binotata, Hyperaspis, xxiv. 115. 

 bipartita, Lachnosterna, xviii, 139, 142. 

 bipunctata, Xabea, xxiii, 219. 

 Birch as food plant of San Jose Scale, 

 xx, 1 ; xxi, 13. 

 Eutettix seminuda on, xxi, 75. 

 infested by Euphoria inda, xxiii, 101. 

 leaves as food of May-beetles, xvii, 

 42, 43; xviii, 114. 

 Bird Grasshopper, xiv, 23 ; xxiii, 67. 



grasshoppers, xxiii, 140-142. 

 birdii, Empoasca flavescens, xxi, 79. 

 Birds, xviii, 152, 161 ; xxiii, 158. 



agency of, in distributing San Jose 



Scale, xx, 3 ; xxi, 6. 

 and the strawberrv root-worms, xiii, 



170. 

 and the Tarnished Plant-bug, xiii, 130. 



Birds — Continued. 

 as check upon multiplication of Leaf- 

 crumpler, xv, 67. 

 upon multiplication of plant-lice, 

 xiii, 45, 46. 

 as enemies of Army-worm, xxiii, 49, 

 51. 

 of corn bill-bugs, xvi, 71. 

 of cutworms, xxi, 101. 

 of Strawberry False Worm, xiii, 



75. 

 of White-grubs, xviii, 123. 

 of wireworms, xviii, 47. 

 sod web-worms eaten by, xxiii, 39. 

 Biston ypsilon collected from Apple, 

 xiv, 95. 

 description of, xiv, 95-97. 

 Bisulphid of carbon for ants in lawns, 

 Misc. Ess., 5. 

 for root-lice, xxi, 53. 

 for Scelodonta nebulosus, xiii, 172. 

 for subterranean larvse, xiii, 69; 



xviii, 50. 

 for White Ant, xix, 199. 

 for wireworms, xxi, 53. 

 Bittersweet subject to injury by Cot- 

 tony Maple Scale, xxiv, 103. 

 bituberosa, Silpha, xxi, 137. 

 bivittatus, Melanoplus, xxi, 130; xxiii, 

 67, 136. 

 Nematus, xiv. 116. 

 Pezotettix, Misc. Ess., 127. 

 bivulnerus, Chilocorus, xx, 19, 20; xxiv, 



115. 

 Black Ant, Little, xxiii, 157-158. 



Blister-beetle. Misc. Ess., 19, 107; xv, 

 4; xxi, 141; xxiii, 112, 113, 231. See 

 also under Blister-beetles. 

 Cherrv. Wild, Eutettix seminuda on, 



xxi," 75. 

 Fruit-weevil as a Strawberry insect, 



xiii, 62, 177. 

 -headed Grass-maggot, xiii, 57-59; 

 Misc. Ess., 91; xxiii, 228. 

 classification and description of, 



xiii, 58. 

 described; also egg, pupa, and 



adult female, xviii, 20-21. 

 food habits of, xviii, 19. 

 injuries to seed-corn by, xiii, 57, 



58; xviii, 7, 8, 19. 

 measure against, xiii, 59. 

 mining flower-bulbs, xviii, 19. 

 Black-knot, xxii, 103. 

 appearance and effect of, xxii, 101, 



104, 125. 

 destructiveness of, xxii, 126. 

 fungus parasite causing, xxii, 125. 

 treatment for, xxii, 126. 

 trees subject to, xxii, 101, 126. 



