67 



Pear sln^ checked l>y spraying, 32. 



-tree saw By in Nebraska, 41. 

 Pepper-grass, wild, cabbage cnrculio on, 50. 

 Perimegatoina variegatura vs. codling moth, 30. 

 Pieris rapae. parasites of, in Iowa, 43. 



rare in Iowa, 43. 

 Pimpla annnlipes and codling moth, 30. 

 PhylJotreta sinuata, not numerous in Missouri, 50. 

 Plant-lice, plentiful in Iowa, 40. 

 Plum curcnlio, scarcity of parasites of, 50. 



wild, Hyzus persica3 on, 40. 

 Plusia brassies, plentiful iu Iowa, 43. 

 Plutella cruciferarum, in Iowa, 43. 

 Podisus spinosus, enemy of Loxostegemaclura?, 53. 

 Potato stalk weevil in Iowa, 43. 

 Prickly ash, Papilio cresphontes on, 44. 

 Pteromalus puparum, parasite on Pieris rapa?, 43. 

 Punic bees, characteristics of, 58. 

 Qucrcus agrifolia, walnut span-worm on, 27. 

 Rape, A]>his brassicse on, 40. 

 lied scale, fed upon by Scymnus lophanthae, 15. 

 Poses, attacked by Cladius pectinicorms, 50. 

 San Jose scale, fed upon by Scymnus lophanthae, 15. 

 Scale-insects, hydrocyanic acid gas for, 9. 

 Scin/.oneura lanigera, fed upon by Scymnus lo- 



phantlne, 15. 

 Bcymnids, black, from Australia, 13, 14. 

 Scymnus flaribirtus, feeds sparingly on scale-in- 

 sects, 11. 

 received from New Zealand, 10. 



lophanthae, feeding on scales, 15. 

 from Australia, 14. 

 Silpha opaca, a possible beet enemy, 40. 

 Soldier-bug, spined, enemy of Loxostegemaclura?, 



53. 

 Span-worm, walnut, description of, 28. 

 enemies and parasites, 29. 



Span-worm, walnut Continued. 

 in California, 26, 27. 



remedies for, 29. 

 Span-worms, injurious iu California, 9. 

 Sphenophorus parvulus, threatening corn, 42. 



oehreus, in Iowa. 4"J. 

 Spinach, Disonycha collaris on, 50. 

 Spraying for Codling moth, 32. 



benefits of, 33. 

 Sunflower, PsBdisca strenuana on, 30. 

 Sweet clover as silage plant, 01. 

 Tent-caterpillars, injurious iu Nebraska. 41. 

 Xhalpochares coceiphaga, descriptions oi early 

 stages of, 24. 

 I imported from Australia, 12. 



parasitised by Pracou sp., 15. 

 Trichobaris trinotata, in Iowa. 43. 

 Trogoderma tarsale, not an enemy of codliug 

 moth, 30. 

 ! Trombidium locustarum. locust mite, 35. 

 | Tunisian or Punic bees, characteristics of. 58. 

 j Tussock moth, in Nebraska, 41. 

 i Twelve-spotted Diab'rotica in tiower-gardens, 50. 

 Vanessa antiopa, plentiful in Iowa, 44. 

 Yedalia cardinalis, sent to Egypt, 9. 

 sent to New Zealand, 9. 

 sent to South Africa, 9. 

 I Walnut Datana in Nebraska, 41. 

 Walnut, English, iusccts on, 20. 

 Walnut span-worm. See Span-worm. 

 Wax secretion, experiment in, 59. 

 Webster, F. M., field work of, 7. 

 Web-worm, garden, in Nebraska, 38. 

 Web-worms attacking beets, 37, 38. 

 White grubs attacking beets, 37. 

 Woolly aphis, eaten by Scymnus lophanthae, 15. 

 Ziuias, damaged by twelve-spotted Diabrotica, 50. 



