XXX HOST INDEX. 



Corn — (Continued), l'wn: 



Devastating grasshopper, Melanoplus devastator 45 



Differential grasshopper, Mclanoplus differ entialis 46 



Granary weevil, Calandra granaria 307 



Harlequin cabbage bug, Murgantia histrionica 201 



Lesser migratory grasshopper, Melanoplus atlanis 43 



Oat aphis, Aphis avenw 87 



Obscure 12-spotted cucumber beetle, Diabrotica 12-punctata tenella 273 



Pale-striped flea-beetle, Systena blanda 285 



Pale-winged grasshopper, Melanoplus uniformis 47 



Potato flea-beetle, Epitrix cucumeris . 261 



Red-legged grasshopper, Melanoplus femur-rubrum 46 



Rice weevil, Calandra oryzm 308 



Seed-corn maggot, Phorbia fusciceps 334 



Sugar-beet wireworm, Limonius californicus 233 



Twelve-spotted cucumber beetle, Diabrotica 12-punctata 272 



Two-spotted mite, Tetranychus telarius 16 



Two-striped grasshopper, Mclanoplus bivittatus 43 



Valley grasshopper, CEdaleonotiis enigma 48 



Variegated cutworm, Lycophotia margaritosa 401 



Western armyworm, Euxoa agrestis 398 



Western cabbage flea-beetle, Phyllotreta pusilla 281 



Western 12-spotted cucumber beetle, Diabrotica soror 271 



Yellow bear caterpillar, Diacrisia virginica 390 



Corn, Broom {Sorghum sp.). 



Oat aphis, Aphis avenw 87 



Corn, Kaffir (Sorghum sp.). 



Granary weevil, Calandra granaria 307 



Cornus — see Dogwood. 



Corylus — see Filbert and Hazelnut. 



Cotoneaster (Cotoneaster sp.). 



Oyster-shell scale, Lepidosaphes ulmi 190 



Pear-leaf blister-mite, Eriophycs pyri 8 



Pernicious or San Jose scale, Aspidiotus perniciosus 179 



Cotton (Gossypium spp.). 



Bean thrips, Heliothrips fasciatus 52 



Citrus mealy bug, Pseudococcus citri 128 



Corn ear-worm, Chloridea obsoleta 397 



Greasy cutworm, Agrotis ypsilon 394 



Melon aphis, Aphis gossypii 90 



Oblique-banded leaf-roller, Archips rosaceana 441 



Pale-striped flea-beetle, Systena blanda 285 



Serpentine leaf-miner, Agromyza pusilla 346 



Small elongated leaf-beetle, Myochrous longulus 280 



Spotted root fly, Euxesta notata 340 



Two-spotted mite, Tetranectins telarius 16 



Cottonwood (Populus spp.) — also see Poplar. 



Alder flea-beetle, Haltica bimargitiata 266 



Apple leaf-hopper, Empoasca mali 63 



Bead-like cottonwood gall-louse, Tecabius populimonilis 77 



Beet root aphis, Pemphigus beta 76 



Cottonwood scale, Chionaspis ortholobis 160 



Greedy scale, Aspidiotus camellice 175 



Mottled cottonwood plant louse, Thomasia populicola 81 



Poplar-stem gall-louse, Pemphigus populicaulis 76 



Tutnam's scale, Aspidiotus ancylus 176 



Spotted tree-borer, Synaphoeta guexi 253 



Walnut scale, Aspidiotus juglans-regiw 175 



