109 



Icerya purchasi, 7, 9, 12. 

 Ichneumon brevicinctor, 46. 



Insects affecting grain fruits, 7, 42. 

 grasses, 7, 20. 



young trees on "western tree 

 claims, 100. 

 injurious in California, 85. 

 Iowa, 18. 

 Missouri, 73. 

 Nebraska, 95. 

 Insecticides, experiments with, 9, 48, 80. 



Beau's Eureka insecticide, 17. 

 hydrocyanic acid gas, 9. 

 London purple, 19. 

 Paris green, 30. 

 Petroleum emulsion, 19, 80. 

 Resin soaps and compounds, 10. 

 Salts, 50, 51. 

 White arsenic, SO. 

 Various substances, 48. 

 X. O. Dust, 19, 80. 

 Iowa, insects injurious in, 18. 

 Ischnodemus falieus, 41. 

 Isocrates vulgaris, 71. 

 Isosoma sp. destructive in California, 93. 



tritici, 42. 

 Jassus inimicus, 31. 

 Kerosene emulsion, 19, 80. 

 Koebele, Albert, Report by, 85. 

 Lachnosterna larva} destructive in Indiana. 48. 



injuring young trees in the West, 

 101. 

 Laphria tergissa destroying Varying Anomala, 51. 

 Lapliygma frugiperda, 46. 

 Leaf-hoppers affecting grass in Iowa, 21. 

 Appearance and habits, 23. 

 Amount and nature of damage, 22. 

 Remedies, 23. 



Enumeration of species observed, 26. 

 Lecanium olese, 13. 



sp. on dogwood, 34. 

 Leucania unipuncta (see Army AVorm). 

 Leucarctia acnea, 92. 

 Lina scripta, 76, 101. 

 Linden, 74. 



Locust injury in 1889, 104. 

 Locusts on the Pacific coast, 93. 

 London purple and Kerosene emulsion, 19. 

 Long Bug, 41. 

 Luperina stipata, 47. 

 Lygus lineatus, 75. 



pratensis, 75. 

 Madrona tree-borer, 85. 

 Maple, 74, 100, 101. 

 soft, 99, 101. 

 Maple Worm, the Green-lined, 99. 

 Meadows and pastures, insects injurious to, 20, 48. 

 Megaspilus niger, 71. 

 Megilla maculata, 72. 

 Megoura sp. found on rye, 71. 

 Melanoplus cinereus, 94. 



devastator, 94. 

 differentialis, 101, 104. 

 femur-rubrum, 22, 24, 94, 101. 

 packardii. 94. 

 spretus, 101, 104. 



Melaxanthus salicis, 20. 

 Meromyza americana, 42. 



found ou grass in Iowa, 19. 

 Merisus destructor, 93. 

 Micropus leucopterus, 41, 55, 96, 97. 

 Millet, 98. 

 Miris affmis, 41. 

 Monophadnus barda, 101. 

 Mulberry, 96. 



Prussian, 103. 

 Murtfeldt, Mary E., Report by, 73. 

 Myzus sp. found on wheat, 71. 

 Nasturtium, 76. 



Nebraska, insects injurious in, 95. 

 Nemorsea leucaniae, 46. 

 New Rose Slug, 78. 

 Life-history, 78. 

 Description of larva, 78. 

 New York Leaf-hopper, 27. 

 Nomophila noctuella, 18. 

 Nysius angustatus, 96. 

 Oak, 82, 87, 88, 100, 

 Oats, 52, 57, 98. 

 Oecanthus latipennis, 82, 101. 



niveus, 101. 

 CEstlund, O. AV., quoted, 38. 

 Olive, 86. 



Ophion purgatus, 46. 

 Orchard grass, 71. 



trees, 74, 75. 

 Osborn, Prof. Herbert, Report by, 18. 

 Pachyneuron micans, 71. 

 Palthis angulalis, description of larva and pupa, 



79. 

 Panicum, 33, 63. 



anceps, 59. 



glabrum, 37, 38. 



prolificum, 59. 



viscidum, 59. 

 Papilioturnus, 101. 

 Paspalum fluitans, 59. 



laeve, 59. 

 Passeriui, quoted, 37. 

 Peach, 74, 75. 

 Pear, 75, 90. 



Bartlett, 90. 

 Peppergrass, 73, 97. 

 Phosphate salt, experiment with, 49. 

 Phyllotreta vitlata, 73, 80. 



zimmermanui, 80. 

 Phylloxera rileyi, notes on, for 1889, 82. 

 Pieris protodice, 76. 



rapae, 76. 

 Pimpla annulipes, 90. 

 Pipizapulchella possibly preying on Chinch Bug, 



64. 

 Plagiodera scripta, 76, 101. 

 Platysamia cecropia, 101. 

 Plum, 74, 86. 



Plum curculio in Missouri, 74. 

 Poa pratensis, 42, 70, 99. 

 Podabrus tomentosus, 72. 

 Podura found on radishes, 74. 

 Polycaon confertus, 85. 

 Polygonum, 97. 

 Populus, 76, 



