722 



INDEX. 



Hordeum miirinum, new Aphid on, 



in Italy, 227. 

 Hordeum pratense, winter-food plant 



of Oscinclla frit in Britain, 533. 

 Hormisciiim (Sooty Fungus), associ- 

 ated with Tachardia in Dutch 



East Indies, 493. 

 Hormodendron, infesting Selenas- 



pidus ayticulatiis in Barbados, 



323. 

 Horn-tail (see Urocerus flavicornis). 

 Hornbeam, pests of, in Britain, 12. 

 horni, Dicerca ; Scymnus. 

 hoynigii, Spevmatophora. 

 horrida, Oncospeyma. 

 hoyyidiis, Aleuyodes. 

 Horse-radish, in rotation of crops 



against Agriotes lineatiis in Ger- 



man\^ 387 ; measures against 



pests' of, in U.S.A., 523, 525, 



571 ; as a bait for Phyllotreta aynio- 



raciae, 523. 

 Horse-radish Flea-beetle (see Phyl- 

 lotreta ayinoyaciae). 

 horticola, PJiyllopertha. 

 hortiiellus, Cranibiis. 

 hortulans, Bibio. 

 hospes, Psendogonatopus. 

 House Cricket (see Gyylhis domes- 



ticus) . 

 howardi, Aleurotlirixus; Euplectrus. 

 Howardia biclavis, intercepted on 



Hibiscus in California, 295, 514 ; 



on ornamental plants in Panama 



Canal Zone, 304. 

 hubbardi, Gerstaeckeria. 

 hudsonicus, Ips. 

 hiimilis, Iridomyrmex. 

 hiimuli, Phorodon. 

 Hungary, miscellaneous pests in, 



256, 447, 448, 592, 610. 

 hunteri, Catolacciis. 

 Hyacinth, Nematodes in bulbs of, in 



Holland, 383; pests of, in U.S.A., 



168, 241. 

 hyacinthi, Rhizoglyphus. 

 hyalinata, Diaphania {Margaronia). 

 hyalinipennis, Oxycarenus. 

 hyalinus, Dilachnus ; Perilampus. 

 Hyalopeplus smaragdiniis, on tea in 



Dutch East Indies, 508. 

 Hyalopteyus arundinis (Plum Aphis), 



in U.S.A., 101, 283 ; Hippodamia 



convergens predacious on, 101. 

 Hvaloptenis primi, in Denmark, 194, 



363; in Italy, 344. 

 Hybernia, parasitised by Phyyxe 



vulgaris, 62. 

 Hyblaea puera (Teak Caterpillar), in 



Burma, 522 ; in Dutch East 



Indies, 507. 

 hybostoma, Aphagiognathus. 



Hydrocarbons, experiments in 

 toxicity of, to wireworms, 320. 



Hydrocyanic Acid, 184, 361, 485 ; 

 against Aegeria exitiosa, 325 ; 

 against Aleurocanthus woglumi, 

 235 ; vacuum fumigation with, 

 against Aiiobiu))i striatum, 255 ; 

 against ants, 154, 546 ; against 

 Capsid and other bugs, 590 ; 

 against Cher me s spp., 535 ; 

 effect of, on Epilachna corrupta, 

 118; against Eriophyes gossypii, 

 572 ; effect of, on eggs of Alala- 

 cosoma neustria, 451 ; unsuitable 

 against Mordellistena cattleyana, 

 67 ; against scale-insects, 9, 117, 

 220, 221, 240, 278, 339, 343, 368, 

 376 ; against Stephanitis rhodo- 

 dendri, 28 ; against pests of 

 stored products, 2, 66, 67, 82, 

 260, 364, 365, 481 ; against 

 termites, 149 ; against vine 

 moths, 93 ; factors influencing 

 injury to citrus in fumigation 

 with, 310 ; for disinfecting cotton 

 seed, 352, 462 ; fumigation of 

 olive trees with, 368; effect of, 

 on seed germination, 139 ; fumi- 

 gation with. 2, 9, 28, QQ, 67, 82, 

 93, 118, 139, 149, 154, 220, 221, 

 231, 240, 260, 278, 325, 339, 352. 

 358, 364, 365, 368, 376, 451, 481, 

 535, 546, 572, 590 ; fumigation 

 with liquid form of, 84, 117, 217 ; 

 soil fumigation with, 65 ; spray- 

 ing with, 93 ; preparation of, 

 28, 376, 388, 584; effect of 

 exposure to light and air on 

 solutions of, 89 ; chloropicrin 

 compared with, 252. 



Hydroecia inicacea (see Gortyna). 



Hydrophilus piceus, effect of inocu- 

 lation of Leptouionas pvrrhocoris 

 into, 440. 



Hyladaula perniciosn, sp. n., on 

 Heriiiera fomes in Bengal, 123. 



hylaeiformis, Pennisetia (Bembecia). 



Hylastes, in forests in Germany, 254. 



Hylastes angnstatus, in pines in 

 Silesia, 610. 



Hylastes ater (Black Pine Beetle), in 

 Britain, 544 ; measures against, 

 in Germany, 255. 



Hvlastes attenuatus, in forests in 

 'Britain, 12, 417. 



Hylastes brunneus, rare in forests in 

 Finland, 600. 



Hylastes cunicularius, measures 

 against, in spruce in Germany, 

 2v54. 



Hylastes glabratus, in spruce in 

 "Finland, 600. 



