52 



Oreouera glauca, boring in sweet orange trees in Jamaica, VII, 85. 

 Orgilus mellipes, parasites of Elasmopalpus lignosellus, XXIII, 21. 

 Orgyia antiqua, injuring larch in Norway, IX, 80. 



leucostignia, abundant in Baltimore, XX, (io; XXVI, 83. 

 Ohio, XVII, 100. 

 injurious in New York, XVII, 17, 20. 

 in Kansas, XXII, 103. 



New England, II, 46. 

 parasites of, IX, 15. 

 Ormenis pruinosa, habits of, XXII, 98. 

 Ornithobius cygni, host of, V, 236. 



parasite of the white swan, V, 202. 

 goniopleurus, host of, Y, 236. 

 Ornithodorus americanus, mention of, Y, 256. 



savignyi, notes on, XXYI, 47. 

 Ornithomyia nebulosa, on owls, Y, 137. 



pallida, on Sylvia sialis, Y, 137. 

 Orsodachna atra, feeding on pear and cherry, IX, 20. 

 Orthomorpha gracilis, on violets, XXVII, 82. 

 Orthoptera, abundant in Florida after cold and frosts, IX, 19. 

 Oscinis frit, damage to oats in Norway, IX, 79. 

 Oxycarenus hyalinipennis, damage by, in Egypt, XXII, 100. 

 Oxyptilus tenuidactylus, on blackberry in Ohio, XX, 71. 

 Pachyneuron altiscuta, parasite on plum scale, II, 90. 



of Pulvinaria acericola, XXII, 23. 

 Paleacrita vernata, in Ohio, VI, 6(); IX, 41. 



New York, YI, 56. 

 Papabotte, food habits of, XXX, 93. 

 Papilio cresphontes, variation in development, IX, 43. 



trolius, variation in development, IX, 43. 

 Parasites, carrying contagious disease, V, 19. 

 distribution of, V, 17. 

 effect of, on the host, V, 18. 

 from South Africa, XXVI, 19. 

 in general, life histories of, V, 14. 

 list of animal, according to hosts, Y, 286. 

 literature of animal, V, 288. 

 losses due to animal, V, 20. 

 popular notions about, V, 21. 

 preventive measures against animal, V, 277. 

 remedies for animal, V, 24, 279. 

 Parasitic and predaceous in.-?ects, value of, against San Jose scale. III, 54. 

 habit, origin of, V, 16. 

 insects, grouping of, Y, 11. 

 Parasitism, results of, Y, 16. 

 Paris green, experiments with, VI, 33. 



poisoning a tree, IX, 25. 

 Parlatoria pergandei, in Georgia, XXVI, 51. 

 zizyphus, in Georgia, XXVI, 51. 

 Paromalus estriatus, feeding on Leptocoris trivittatus, XXII, 103. 

 Parthenogenesis in Emphytus canadensis, XXVII, 33. 

 Pasimachus punctulatus, killing Anisodactylus verticalis, XXII, 103. 

 Pedicinus eurygaster, longiceps, and breviceps, mention of, V, 168. 

 Pediculoides ventrieosus, feeding on Cicada eggs, XIV, 103. 



