64 



Corn, injury to — Continued. 



by Tarnished Plant-bug, xiii, 115. 

 by timothy bill-bugs, xxiv, 1-7. 



general results and total 



amount of, xxiv, 3-6. 

 methods of prevention, xxiv, 



6-7. 

 summary of investigation 

 of, xxiv, 7. 

 by Wheat Wireworm, xviii, 8, 36. 

 bv White-grubs, xvii, 42; xx, 26, 

 29, 30, 31 ; xxiv, 166. 

 insect group, divisions of, xxiii, 2. 

 injury to, xviii, 3-4. 



general effects of, xxiii, 5. 

 most destructive to, xxiii, 57. 

 insects eating irregular holes in leaves 

 of, or notching edges of same, 

 xxiii, 226, 230-231. 

 grouped according to economic im- 

 portance, xxiii, 14-16. 

 list of, with reference to economic 



articles on, xxiii, 234-273. 

 on new and little known, xiv, 11- 



33. 

 partial economic bibliography of, 



Misc. Ess., 57-123. 

 subterranean, xxiii, 3. 

 systematic list of, Misc. Ess., 124- 

 "126. 

 the less important, xxiii, 70-155. 

 the more important, xxiii, 16-69. 

 the unimportant, xxiii, 156-224. 

 kernels as food of Dusky Leaf-bug, 

 xxiii, 199. 

 of Julus cceruleocinctus, xxiii, 



223. 

 of Parajulus diversifrons, xxiii, 



223. 

 of Plagiognathus obscurus, xxiii. 

 201. 

 gnawed by Formica schaufussi, xxiii. 



161. 

 punctured by Leptoglossus opposi- 

 tus, xxiii, 197. 

 key to the discussion of insect in- 

 juries to, xxiii, 225-233. 

 leaf, eggs of Draeculacephala molli- 



di posited on, xxiii, 205. 

 Leaf-aphis, or Leaf-louse, xviii, 74; 

 xxiii, 2. 3, 12, 123-133. 

 as broom-corn and sorghum insect, 



xxiii, 206. 

 disappearance of, in fall, xviii. 73. 

 earliest appearance of, xviii, 70. 

 field observations on, xxiii, 126- 



128. 

 injuries by, xxiii, 123-124, 125. 

 insectary experiments with, xxiii, 



128-133. 

 on life history of, xxiii. 125, 133. 



Corn Leaf -aphis — Continued. 



transfer of, to roots of corn or 

 other plants, xviii, 74. 

 Leaf-beetle, Southern, xxiiii, 103— 



104, 231. 

 Leaf-miner, Misc. Ess., 92; xxiii, 



164, 226. 

 leaves as food of Hyperchiria io, 

 xxiii, 168. 

 colonies of Clover Plant-louse on, 



xxiii, 208. 

 cut up by Leaf-cutting Ant. xxiii. 



159. 

 eaten by adults of White-grubs, 

 xvii, 42. 

 by larva of Lerema accius, xxiii, 



166. 

 by Scudder's Short-winged Grass- 

 hopper, xxiii, 142. 

 by Short-winged Green Grasshop- 

 per, xxiii, 212. 

 mined by Ceratomyza dorsalis, xxiii, 



165-166. 

 punctured by Sphragisticus nebulo- 

 sus. xxiii, 198. 

 Mealy Rug, xviii, 53. See also Sor- 

 ghum Mealy Bug. 

 measures of prevention and remedy 



for insect injury to, xxiii, 6. 

 Moth, xviii, 6. 

 myriapod, xiii, 140; Misc. Ess., 123; 



xxiii, 223. 

 Myzus achyrantes on. xxi, S3, 

 number of insect species injuring, 



xviii, 3. 

 Oncometopia undata on, xxi, 71. 

 plant, adaptations and reactions of, to 

 insect visitants, xxiii, 3-5. 

 injuries to, affecting the whole, 

 xxiii, 227. 

 to different parts of, xxiii, 6-8. 

 to ear of, xxiii, 8. 

 to leaves of, xxiii, 6, 226. 

 to roots of, xviii, 52-165. 



synopsis of, and order of 

 discussion, xviii, 53-55. 

 to seed of, in the earth, xviii, 

 7-51; xxi. 136: xxiii, 222. 

 synopsis of, and order of 

 discussion, xviii, 8. 

 to silks of, xxi. 125. 



or to kernels at tip of ear or 

 beneath husks, xxiii, 226. 

 to stalk o\. Misc. Ess., 23; xxiii, 



7, 197. 226. 

 to tassel of, xxiii, 227. 

 to underground parts of, xxiii, 

 2J7-22W. 

 insects injuring, above ground, xxiii. 

 16-17. 

 injuring, obscurely, xxiii. 226, 227, 

 233. 



