108 



Clisiocampa constricta, 87. 

 erosa, 87. 

 fragilis, 87. 

 s'trigosa, 87. 

 sylvatica, 101. 

 thoracica, 87. 

 Clover, 19, 47, 75, 82, 98. 



-seed midge in Iowa, 19. 

 Coccinella 9-notata, 64, 72. 

 Codling moth in Missouri, 75. 

 California, 89. 

 parasites of, in California, 8, 90. 

 Coffee bean, 101. 



Colorado potato beetle, experiments with, 80, 81. 

 Conozoa wallula, 94. 

 Contopus virens, 48. 

 Coquillett, D. W., Report by, 9. 

 Coriscus ferus, 26. 

 Corn, 43, 46, 47, 48, 52, 53, 57, 100. 



Sweet, 76. 

 Corn root-worm in Nebraska, 100. 

 Corn us, 33. 



sanguinea, 36. 

 sericea, 39. 

 Corymelrena pulicaria, 75. 

 Cosmos, 75. 

 Cottonwood, 100, 101. 

 Cottony Cushion Scale, 9, 12. 

 Crambus exsiccatus, 18. 



laqueatellus, 18,48. 

 zeellus, 47, 48. 

 Cressonia juglandis, 101. 

 Cruciferaa injured by Phyllotreta vittata, 73. 

 Cucumber, 76, 82. 

 Currant, 80, 88. 

 Cut- worm, a new, 47. 

 Cut- worms in California, 88. 

 Iowa, 18, 20. 

 Nebraska, 97. 

 Dactylis glomerata, 71. 

 Dahlia, 75. 

 Datana angusii, 101. 



ministra, 44, 45. 

 Destructive Leaf-hopper, 30. 

 Diabrotica 12-punctata, 19, 52, 76. 

 longicornis, 100. 

 soror, 87. 

 vittata, 19. 

 Diamond soluble bone, experiment with, 48. 

 Diedrocephala coccinea, 27, 28. 

 mollipes, 26. 

 noveboracensis, 27. 

 versuta, 27. 

 Dipterous parasite of Army Worm, 98. 



Diabrotica soror, 87. 

 Disonycha collaris, 76. 



penusylvanica, 101. 

 Dissostcira Carolina, 94. 



obliterata, 94. 

 Dogwood Plant-louse, 20, 32. 



Its identity with the grass root-louse, 32. 

 Doryphora 10-lineata, 80. 

 Drastorius dorsalis, 52. 

 clogans, 52. 

 Drymeia sp. parasitic on Army Worm, 46. 

 Elm, 74, 100. 



Elymus americanus, 93. 



Empusa grylli, 106. 



Encyrtus websteri, 71. 



Entomological notes from Missouri for 1889, 73. 



Entomopbthora disease of the Chinch Bug, 60. . 



Entomophthora calopteni, 104, 106. 



grylli, 106. 

 Epicauta cinerea, 101. 

 Epitrix cucumeris, 19. 

 Eragrostis megastachya, 37. 



Erax larva, probably parasitic on White Grub, 51. 

 Eriosoma? cornicola, 37, 39, 40. 

 ? fungicola, 37, 38, 40. 

 European Cabbage Butterfly in Missouri, 76. 

 Eureka insecticide, experiments with, 17. 

 Fabricius's original description of Aphis corni, 36. 

 Fall Army Worm, 46. 

 False Chinch Bugs in Nebraska, 95. 

 Fertilizing salt, experiments with, 50. 

 Flea-like negro-bug in Missouri, 75. 

 Fluted Scale, 9, 12. 

 Four-pointed Agallia, 28. 

 Foxtails (see Setaria). 

 Fungus disease of Chinch Bug, 60. 



grasshox>pers, 104. 

 Gas treatment for Scale insects, 9. 

 Geocoris bullata, 96. 

 Gortyna nitela, 47, 75. 

 Grain Aphis in Indiana, 64. 



Severe outbreak in 1889, 64. 



Influence of temperature and moisture, 65. 



Cool temperature favorable to its develop 

 ment, 68. 



Efficacy of parasites. 69. 



Notes on life-history, 69. 



Enumeration of natural enemies, 71. 



Other species of Aphids found on wheat, 70. 

 Grain fruits, insects injurious to, 7, 42. 

 Grape, 86, 96. 

 Grass, 19, 20, 34, 93, 100. 



Hungarian, 41. 



Timothy, 45. 

 Grasses, insects injurious to, 7, 20, 41. 

 Grass-root PlaDt-louse, 32. 

 Grasshoppers in Iowa, 21. 



fungus disease of, 104. 

 Green-lined Maple worm in Nebraska, 99. 

 Gryllus luctuosus, 94. 

 Hackberry, 101. 

 Hadena stipata, 47. 

 Halticus pallicornis, 82. 

 Hesperotettix pacificus, 44. 

 Hessian fly in California, 93. 



new food-plants of, 93. 

 Heteroptera infesting grasses, 41 . 

 Hieroglyphic Leaf-hopper, 28. 

 Hippodamia convergens, 72. 

 glacialis, 72. 

 parenthesis, 72. 

 13-punctata, 72. 

 Honey Locust, 101. 



Hopper Dozers recommended for Leaf-hoppers, 25. 

 Hungarian grass, 41. 

 Hurtful Leaf-hopper, 31. 

 Hydrocyanic gas treatment, 9. 

 Hyphantria cunea, 101. 



