94 



Cutworms, in Missouri in 1891, 38. 

 Cutworms, on sugar beet, 11. 

 Diabrotica longicomis, in Nebraska, 9. 

 on sugar beet, 11. 



vittata, attempt to colonize Uropoda upon, 42. 

 on sugar beet, 11. 



12-punctata, tbymo-cresol useless against, 44. J 

 Dilophogaster californica, parasite of black scale, 



31. 

 Diplodus renardii, preying upon Chalcidids, 31. 

 Diplosis tritici, investigated in Ohio, 65. 

 Dogwood Apbis = Aphis cornicola. 

 Doryphora 10-lineata, attempt to colonize Uropoda 



parasite on, 42. 

 Echinops sphserocephalus, expts. witb, 84. 

 Edema albifrons, in Missouri, 40. 

 Eleodes opaca, Tacbina on, 12. 



tricostata, on cabbage, 11. 

 Empusa pachyrrhinse, fungus onPachyrrbina, 71. 

 Encyrtus flavus, bred from Lecaniumbesperidum, 



26 . 

 Entomological notes for 1891 in Missouri, 36. 

 Flavescent clover weevil = Sitones flavescens. 

 Fluted scale, subjugated by Yedalia, 13. 

 Frosted scale, notes on, 33. 

 Goniocotes hologaster, expts. against, 44. 

 Gooseberry span-worm, in Nebraska, 10. 

 Grape curculio, trip to investigate, 63. 

 Grapbolitha interstinctana, in Iowa, 60. 

 Greedy scale, notes on, 25. 

 Gypsy moth, birds feeding upon, 81. 



food-plants of, 80. 



legislation against, 76. 



line of work employed against, 79. 



region infested by, 78. 



report upon, 75. 

 Harlequin cabbage-bug, in Missouri, 37. 



remedies against, 38. 



thymo-cresol, useless against, 44. 

 Harpalus caliginosus, probable enemy of Tipula,70. 



pennsylvanicus, probable enemy of Tipula,70. 

 Harris's apple scale, thymo-cresol against, 44. 

 Heliothis armigera, investigation of, 45. 

 Hemiptera, attempt to colonize Uropoda ameri- 



cana on, 43. 

 Hemipterous insects on cotton, 48. 

 Hemispherical scale, notes on, 27. 

 Henskaw, Samuel, report of, 75. 

 Hesperomyces virescens, on Chilocorus, 16. 

 Hessian fly, remarks on, 63. 



report on, 65. 

 Hippodamia convergens, on sugar beet, 11. 

 Honey, consumption of, in the secretion of wax, 88. 



special planting for, 83. 

 Hopperdozers, for leaf -hoppers and locusts, 60. 

 Hydrocyanic gas treatment, reference, 19. 

 Hyphantria cunea, Plochionus timidus destroy- 

 ing. 41. 

 Icerya purchasi, kept in subjection by Yedalia 



cardinalis, 13. 

 Insect depredations in Nebraska, report on, 9. 



diseases, and their relation to boll worm, 54. 

 Insects of the season in Iowa, 57. 

 Insect ravages mistaken for those of boll worm, 48. 

 Insecticides, experiments with, 43. 

 Isodromus iceryse, parasite of Chrysopa, 17. 

 Isosoma grande, in Missouri, 37. 



Joint-worm, in Missouri, 37. 



Kermes camelliae, possibly synonymous witb As- 



pidiotus rapax, 25. 

 Laboulbeniacea?, parasitism of. 16. 

 Lace-wings, cannibalistic habits of, 17, 18. 

 Lachnosterna, work on biology of, 64. 



fusca, work on biology of, 64. 



gibbosa, work on biology of, 64. 



hirticula, work on biology of, 64. 

 Ladybird, Australian, fluted scale kept in sub- 

 jection by, 13. 



twice-stabbed, enemy of scale-insects, 15, 30. 



(Scymnus) feeding on red scale, 16. 

 Largus cinctus, damaging cotton, 48. 

 Leaf-hoppers, grass, hopperdozer against, 60. 

 Lecanium filicuni, 27. 



hemisphsericum, notes on, 27. 



hesperidum, notes on, 26. 

 thymo-cresol against, 35. 



hibernaculorum, 27. 



oleae, fungus attacking, 18. 

 habits of, 28. 

 resin wash against, 19. 



pruinosum, notes on, 33. 



sp., notes on, 34, 

 Lema trilineata, attempt to colonize mits on, 42. 

 Limneria flavicincta, parasite of Orgyia. 40. 

 Locusts, abundant in Iowa, 60. 

 Lyda sp., on wild plum, 10. 

 Mally, F. TV., report by, 45. 

 Maple-worm, green-striped, in Nebraska, 10. 

 Melilotus alba as a honey plant, 85. 

 Meliola cirri, fungus on citrus trees, 19. 

 Monoxia guttulata on sugar beet, 11. 

 Murgantia histrionica in Missouri, 37. 

 remedies against, 38. 

 thymo-cresol useless against, 44. 

 Murtfeldt, Mary E., report of, 36. 

 Myzus persica?, destructiveness in Iowa, 58. 

 Nephelodes violans, abundant in Missouri, 38. 

 Ocneria dispar, report upon, 75. 

 Oleander scale, notes on, 20. 

 Orgyia leucostigma in St. Louis, 39. 

 Orsodachna atra on peach blossoms, 38. 

 Orborn, Herbert, report of. 57. 

 Pachyrrhina sp., notes on, 70. 



oviposition of, 72. 

 Perilampus sp., bred from Chrysopa, 18. 



preyed upon by Diplodus, 31. 

 Phlceothrips nigra, on clover in Iowa, 60. 

 Pieris rapee, increase of parasite of, 61. 



parasites of, 43. 

 Plant -lice, abundant in Iowa, 58. 

 Plant-louse, dogwood, notes on, 59. 



wheat, abundance in Iowa, 58. 

 Plochionus timidus, enemy of Hypbantria 



cunea, 41. 

 Plum curculio, in Missouri, 37. 

 Plusia brassicae, disease of, 55. 

 Pteromalus sp., bred from Cbrysopa, 18. 

 Pterostichus femoralis, probably an enemy of 

 Tipula, 70. 



lucublandus, probable enemy of crane-flics, 

 70. 

 Pyralidae on cotton, 48. 

 Pyretbrum, against boll worm, 53. 

 Quercus obtusiloba, Chennes sp. on, 39. 





