HOST INDEX. Xli 



Guava (Psidium sp.). Page 



Black scale, Saissetia olew 154 



Florida red scale, Chrysomphahis aonidum 181 



Florida wax scale, Ceroplastes floridcnsis 138 



Hemispherical scale, Saissetia hemisphcerica 151 



Long-tailed mealy bug, Pseudococcus longispinus 131 



Guelder Rose — see Snowball. 



Gum — see Eucalyptus. 



Gumbo — see Hibiscus and Okra. 



Hackberry or Nettle Tree (Celtis spp.). 



Cottony cushion or fluted scale, Icerya purchasi 110 



Cottony maple or vine scale, Pulvinaria vitis 136 



Mourning cloak butterfly, Euvanessa antiopa 461 



Oyster-shell scale, Lepidosaphes ulmi 190 



Pernicious or San Jose scale, Aspidiotus perniciosiis 179 



Putnam's scale, Aspidiotus ancylus 174 



Hawkseed (Crepis sp.). 



Bean thrips, Heliothrips fasciatus 52 



Hawthorn (Crataegus oxycantlia) . 



Clover-apple aphis, Aphis bakeri 88 



Cottony maple or vine scale, Pulvinaria vitis 136 



European fruit-tree scale, Aspidiotus ostrewformis 179 



Frosted scale, Lecanium pruinosum 151 



Green apple aphis, Aphis pomi 94 



Oat Aphis, Aphis avenw 87 



Oblique-banded leaf-roller, Archips rosaceana 441 



Oyster-shell scale, Lepidosaphes ulmi 190 



Pear or cherry slug, Caliroa eerasi 357 



Pernicious or San Jose scale, Aspidiotus perniciosiis 179 



Red-humped caterpillar, Schizura concinna 407 



Rosy apple aphis, Aphis sorbi 96 



►'eurfy scale, Chionaspis furfura 158 



Shot-hole borer or fruit-tree bark-beetle, Eccoptogaster rugulosus 311 



Yellow-striped armyworm, Prodenia prwfica 402 



Hazelnut (Coryhis spp.). 



Apple leaf-hopper, Empoasca mali 63 



Imported currant borer, jEgeria tipuliformis 428 



Lintner's scale, Chionaspis lintneri 159 



Oak twig-girdler, Agrilus politus 234 



Oblique-banded leaf-roller, Archips rosaceana 441 



Heath (Erica sp.). 



Greedy scale, Aspidiotus camellia' 175 



Ivy or oleander scale, Aspidiotus hederw 177 



Oyster-shell scale, Lepidosaphes ulmi 190 



Heather (Galium vulgaris). 



European fruit-tree scale, Aspidiotus ostrewformis 179 



Oyster-shell scale, Lepidosaphes ulmi 190 



Hcdera helix — see English Ivy. 



Helianthemum — see Rock Rose. 



Helianthus — see Sunflower. 



Heliotrope (Heliotr opium spp.). 



Bean thrips, Heliothrips fasciatus 52 



Two-spotted mite, Tetranychus telarius 16 



Heliotr opium — see Heliotrope. 



Hemlock (Tsuga canadensis). 



Lesser shot-hole borer, Xyleborus xylographus 314 



Putnam's scale, Aspidiotus ancylus 174 



Hemlock, Water (Cicuta virosa) . 



Parsnip plant louse, Siphocoryne caprcw 100 



