II 



Burning for Chinch Bug, 53. 



for Sphenophorus, 72. 



stubble for Sphenophorus robastus, 71. 

 sculptilie, 62. 

 Burrowing Web Worm, IX, 98. 



description of imago, 100. 



description of larva, 99. 



injury to Corn, 98. 



c 



Cabbage, injury to, by meadow maggots, 79. 

 by Spotted Cutworm, 86. 

 Worm, European, IX 

 Cjenogenes mortipennella, X,101, 

 Cactopha^us, 59. 

 Calandridae, 58. 

 callosfug, Sphenophorus, 60. 

 Canadian Entomologist cited, 60,62,98,101. 

 carious, Sphenophorus, 58,60,64, 67,68,71. 

 Carter, Joseph, on Sphenophorus placidus, 71. 

 Catbird feeding on Sphenophorus, 71. 

 Cat-tail, food plant of Sphenophorus pertinax, 60. 

 Cherries, injury to, by Lady Bug, XI. 

 Chester, E. E., on sowing timothy with wheat 



as protection against Chinch Bug, 52. 

 Chickens feeding on Sphenophorus, 71. 

 Chinch Bug, IX, X, XII. 



barriers to migration of, 43,56. 

 coal-tar, 43,56. 

 and oil, 43, 56. 

 breeding in Oats, 51, 54. 

 contagious diseases of, 2,40,45,56. 

 early occurrence of, in Illinois, 50. 

 effect of, on grain and corn, 50. 

 effect upon, of abandoning corn as a crop, 5. 

 of the abandonment of wheat culture, 

 0,55. 



of the successive abandonment of corn 



and wheat, (i. 

 food experiments with, 50. 

 influence of excessive drouth upon, 5. 

 injury, collection of data concerning, 8. 



comparison of the crops for 1886 and 



1887 with reference to, 21. 

 experiments with fertilizers to support 



crop against, 35. 

 general remarks upon the tables exhibit- 

 ing degree of, 10. 

 relations of tiie area of wheat and other 



crops to. 7. 

 Hludy of data concerning, 9. 

 to all crops combined, compared with 



average of each, J!2 32. 

 to (;orn as compared with acreage in 



wheat and other grainh, 11-16. 

 to grass as comi>ar('d with areas in wheat 



and oilier cr<»pH, Ki-IH. 

 to meaihnv, 51. 



to Hiriall grain, corn, and grass, reportc^d 

 by townshipH, 1H87, a, 4, 

 as compared wilh the area in wheal 

 1111(1 othf'r crops, 19 21. 



Chinch Bug, miscellaneous notes and observa- 

 tions upon, 50. 

 Negro Bug associated with the, 51, 57. 

 oviposition of, in midsummer, 51. 

 precaution in burning out, in spring, 53. 

 secondary effects upon, of the abandonment 



of wheat, 6. 

 sowing timothy with wheat as protection 



against, 52. 

 starvation experiments, 45,56. 

 studies on the, 1-57. 



summary and conclusions^ 53. 

 successful defence of corn against, 53. 

 summary of current opinion respecting 

 wheat culture and the, 32. 

 Chocolate-striped Cutworm, detcriplion of larva, 

 87. 



cicatricosus, Sphenophorus, 60. 



Cincinnati Society of Natural History, Journal, 



cited, 59. 

 clandestina, Agrotis, 85. 



Clay-backed.Cntworm, IX,85,89. See Cutworm, 

 Clay-backed, 

 -colored Bill Bug, 59, 69. 

 Clover, injury to. by Clay-backed Cutworm, 90, 

 91,92. 



by Dingy Cutworm, 88. 

 by meadow maggots, 75", 82. 

 by tipulid larva, XI. 

 White, injury to by Western Striped Cut- 

 worm, 89. 



Club Rush as food plant of Sphenophorus 



ochreus, 58,66,69. 

 Coal-tar as barrier to migration of Chinch Bug, 

 43, 56. 



and oil or grease as barrier to migration of 



Chinch Bug, 43, 56. 

 emulsion for Chinch Bug, 41, .56. 

 water, effect on corn, 40. 

 for Chinch Bug, 40,56. 

 Codling Moth, spraying apple-trees to protect 



fruit from, X. 

 Coleoptera of North America, check lists, cited, 

 59. 



Coleus, effect of steam upon, 43. 



communis, Phragmites, j58. 



Comstock, J. II., on Sphenophorus pertinax, 60. 



robnstus, 60. 



sculptilis, 61,62. 



coucavuB, Lixus, 76. 



Conotrachelus nenuphar, foedintr habits of, 76. 

 Contagious disea.«' of Chinch Mus:, 2,40,45,56. 

 Corimelujna pulicaria, 51. 

 Corn, 54. 



as food of Tenebrioides mauritanica, XI. 

 Bill Hugs, 58-74. See under Sphenophorus . 

 frenching of, 62. 



injury to, by IJurrowiug Web Wov " ' 

 1(H). 



by Chinch Hug, 3,1.11-16. 



by Clay-l)acke<l (^iitworni, 84,90,91,92. 



by cutworuiH, S4. 



hy Dingy Cutworm, 88. 



by (irt'Hsy Cutworm 85,93, 



