Ixxx 



THE GYPSY MOTH. 



PAGE 



Hylan, J. P., on assembling of gj^sy moth, 345 



on leaf area of trees, 495 



Hyl a Pickering ii, 404 



Hymenoptera attacking the gypsy moth, 375 



Hymenopterous parasites destroyed by flycatchers, . . 220, 241, 376 



Hyphantria cnnea, 402 



Hypogymna dispar, .......... 255 



I. 



Ichneumon disparis, .......... 378 



grandis, hibernation of, 377 



Ichneumons captured by birds, 220, 241, 376 



Icterus galhula. See Baltimore oriole. 



Imago of gypsy moth. >S'ee Female moth ; male moth. 



Implements used in searching for eggs, 125 



Importation of birds, 232 



of English sparrow, 233, 234 



of gypsy moth, form of, ........ 4 



of parasites, 288, 406 



Imported insects, damage from, 270 



In-and-in breeding, . 368 



Increase of the gypsy moth, 94 



conditions favoring rapid, 95 



due in some measure to sparrows, 235 



influences that retarded, 5 



normal rate of, in isolated colonies, ...... 95 



on neglected lands, 31 



ratio of, 95 



retarded by climate, 5 



retarded by isolation, 6 



weather favorable for the, ........ 84 



Indigo bird attacking gypsy moth, 207, 219 



Infestation, centres of, 104 



Infested estates, account kept of, 52 



localities, birds frequenting, 223 



localities designated on maps, 50, 52 



region appointed to inspectors, 49 



region, colonies found in 1891 outside of, 70 



region, condition in 1891, ........ 53 



region, description of, 100, 101 



region, extent of, 53, 108 



region, how inspected, 196 



region, inspection of belt around, 108 



region of 1891, moth rarely found outside of, . . . . 6-1 

 region, proportion of population in, . . . . . . 101 



region, railroads running through, 101 



region visited by Agricultural committee, 36 



region visited by entomologists, 69, 79 



towns, proportionate numbers of the gypsy moth in, . . . 99 



