734 



INDEX. 



intercepted in bulbs of, in New 

 Zealand, 468. 



hyacinthi, Rhizoglyphns . 



hyalinipennis, Oxycarenus . 



Hyalopterus arundinis (pruni) (Mealy 

 Plum Aphis), on plum in Bess- 

 arabia, 208; in Britain, 11, 185 

 320 ; on prune in California, 213 

 in Denmark, 62 ; in Ontario, 420 

 natural enemies of, 185, 320. 



Hybernia defoliaria (Large Winter 

 Moth) , in Britain, 382 ; in orchards 

 in France, 205, 266 ; in orchards 

 in Germany, 254 ; in Russia, 117; 

 banding against, 205. 



Hyhlaea puera, in teak in India and 

 'Dutch East Indies, 623. 



Hydrellia griseola, on cereals in 

 Denmark, 61. 



Hydrochloric Acid, against vine 

 moths, 147. 



Hydrocyanic Acid (Cyanide), against 

 ants, 147. 548 ; against Coccids, 

 309, 315, 470, 510, 512, 517, 547 ; 

 against Dtoryctria abietella, 460 ; 

 against pests under glass, 42, 18, 

 49, 218, 246, 285, 311, 319, 

 334, 480, 481, 587 ; distribution 

 of, in greenhouse fumigation, 609 ; 

 inadvisable against Monarihro- 

 palpus huxi, 72 ; against pests of 

 orchard and nursery stock, 307, 

 414 ; impracticable against Sirex 

 spp. damaging lead chambers, 60 ; 

 as a soil disinfectant, 17 ; against 

 pests of stored products, 101, 207, 

 259, 397, 449 ; against termites, 

 127 ; against beetles in timber, 

 526 ; against pests of tobacco, 81, 

 344, 376 ; preparation of, 1, 414, 

 480 ; fumigation with, 1, 42, 48, 

 49, 72, 81, 82, 101, 127, 147, 207, 

 217, 218, 246, 259, 285, 307, 309, 

 311, 315, 319, 334, 344, 376, 397, 

 414, 449, 470, 480, 481, 510, 517, 

 526, 547, 548, 587, 609, 619; 

 fumigation with liquid form of, 

 512; economy in fumigation with, 

 619 ; effect of, on plants, 82 ; 

 sulphur compared to, as a fumi- 

 gant, 217 ; Zyklon a derivative 

 of, 567 ; restrictions on use of, 

 in Germany, 617. 



Hydroecia micacea (see Gortyna). 



Hydrogen Fluoride, unsuitable as a 

 fumigant, 142. 



hylaeiformis , Pennisetia [Bemhecia). 



Hylastes, Clems formicanus pre- 

 dacious on, in Britain, 382 ; in 

 timber in Germany, 60. 



Hylastes angustatus, 60. 



Hylastes ater (Black Pine Beetle), in 

 England, 562 ; measures against, 

 in forests in Sweden, 64, 65. 



Hylastes cunicularius , in forests in 

 Sweden, 64. 



Hylastes {Hylurgops) palliatus 

 (Brown Pine Beetle), in pine and 

 spruce in England, 562 ; in forests 

 in Sweden, 64. 



Hylasiinus obscurus (Clover Root 

 Borer), in Indiana, 213. 



Hylecoetus [Lymexylon) dermestoides, 

 food-plants of, in Germany, 4, 143. 



Hyleniyia, genera referred to, 193 ; 

 reaction of, to various odours, 

 613. 



Hvleniyia antiqua (Onion Fly, Onion 

 Maggot), 105 ; in Britain, 49, 50 

 382, 526, 564; in Canada, 131 

 163, 577, 612 ; in Denmark, 62 

 in Russia, 454 ; larva of, 193 

 bionomics of, 50, 564, 577 

 measures against, 163, 526, 564, 

 577. 



Hylemyia brassicae (see Phorbia) . 



Hylemyia cilicrura (see Phorbia). 



Hylemyia coarctata (Wheat Bulb 

 Fly), on cereals in Britain, 10, 

 366, 383 ; measures against, in 

 Germany, 15 ; on cereals in 

 Mesopotamia, 330 ; bionomics of, 

 366. 



Hylemyia fusciceps (see Phorbia 

 cilicrura) . 



Hylemyia trichodactyla (see Phorbia) . 



Hyle sinus cingulatus, in Japan, 100 ; 

 Sphaeotrypes macmahom consider- 

 ed a variety of, 100. 



Hylesinus crenatus, in ash in Britain, 

 383. 



Hylesinus fraxini, 149; food-plants 

 of, in Britain, 383, 562. 



Hylesinus mandshuricus , sp. n., in 

 ash in Manchuria, 328. 



Hylesinus vittatus, in elm in Britain, 

 562. 



Hylobius abietis fPine Weevil), in 

 forests in British Isles, 476, 498 ; 

 in forests in Germany, 292, 498 ; 

 in Sweden, 64, 65 ; occasionally 

 in Pinus strobus in vSwitzerland, 

 556 ; bionomics and distribution 

 of, 498 ; measures against, 65, 476. 



Hylotrupes hajulus, an imported 

 pest of timber in Argentina, 627 ; 

 in timber in France, 2. 



Hylotrupes ligneus, Hopldns' host- 

 selection principle in relation to, 

 in U.S.A., 83, 84. 



Hylurgops palliatus (see Hylastes) . 



Hymenoptera, aspects of parasitism 

 by, 80, 273. 



