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INDEX. 



Sugar-cane Beetle Borer (see Rhah- 



docnemis obscura). 

 Sugar-cane Butterfly (see Calisto 



archebates). 

 Sugar-cane Leafhopper (see Perkin- 



siella saccharicida). 

 Sugar-cane Leaf-miner (see Cos- 



mopteryx) . 

 Sugar-cane Leaf Scale (see Piilvi- 



naria iceryi). 

 Sugar-cane Mealy-bug (see Pseudo- 

 coccus bromeliae and P. sacchari). 

 Sugar-cane Moth Borer (see Diatraca 



saccharalis) . 

 Sugar-cane Root Borer (see Dia- 



prepes abbreviatus). 

 sulcata, Phasgonophora. 

 sulcatus, Lopus ; Otiorrhynchiis. 

 sulcicollis, Ceuthorrhynchus ; Pachy- 



tylus (see Locusta pardalina) . 

 sulcirostris, Panscopus {Phyma- 



tiniis). 

 sulciventris, Oncoscelis. 

 Sulphate of Iron (see Iron Sulphate) . 

 Sulphates, spreaders for lead ar- 

 senate not improved by addition 



of, 372. 

 Sulphur, dusting with, 2, 51, 136, 



149, 207, 218, 129, 233, 277, 280, 



283, 310, 313, 363, 409, 413, 

 454, 455, 504, 530 ; fumigation 

 with, 74, 94, 215, 239, 250, 258, 



284, 520 ; an unsatisfactory fumi- 

 gant against Bruchus rufimanus 

 and wax moths, 167, 272 ; value 

 of, as a soil-dressing, 277, 287 ; 

 spraying with, 113, 208, 218, 277, 

 283, 409, 451, 529, 530; formulae 

 containing, 113, 363, 451, 529, 

 530 ; and lead arsenate, 2, 207, 

 233, 280, 310, 363; and white 

 arsenic, arsenious acid and 

 sulphur anhydride prepared from, 

 53 ; useless against Anaphothrips 

 striatus, 465 ; in mixture for 

 painting apple-trees against 

 Eriosoma lanigerum, 153 ; as a 

 wash against Eumarchalia 

 gennadiosi, 203. 



Sulphur Dioxide, effect of fumiga- 

 ting cotton-seed with, 471 ; ex- 

 periments with, against furniture 

 beetles, 443. 



Sulphuric Acid, effect of, on under- 

 ground insects, 482 ; in prepara- 

 tion of hydrocyanic-acid gas, 65. 



Sulphurous Acid, experiments with, 

 against pests of stored products, 

 425 ; horse mange treated with, 

 428. 



Sulphurous Anhydride, fumigation 

 with, against Atta spp., 53 ; 



fumigation with, against Coleop- 

 terous book pests, 36 ; chloro- 

 picrin more effective against 

 grain pests than, 334. 

 Sumatra, coconut pests in, 329 ; 

 epidemic disease of Lepidopterous 

 pests of tea in, 510; Opatrum 

 depressum in, 425 ; (see also 

 Dutch East Indies). 



sumatranus, Helopeltis. 

 Sumnins venardi, predaceous on 

 Monophlebus stebbingi octocauda- 

 tus in India, 100. 



Sunda Islands, Kirbyana pagana in, 

 SQ. 



Sundri (see Heritiera fames) . 



Sunflower, Lygns on, in Germany, 

 289 ; bionomics of Homoeosoma 

 nebulella on, in Rumania, 274 ; 

 pests of, in Russia, 102, 104, 105. 

 106 ; food-plant of insect pests 

 in U.S.A., 98, 137, 235. 



sunia, Xylomyges. 



Sunhght, as a factor in forest 

 insect control, 365. 



Sunn Hemp (see Crotalaria juncea). 



supernotatus, Psenocerus. 



superstitiosus, Dysdercus. 



suppressalis, Chilo. 



suppressaria, Biston. 



surinamensis, Silvanus [Oryzae- 

 philus). 



suspensus, Rhopalicus. 



suturalis, Brumus ; Ips {Tomicus) ; 

 Nirvana. 



Swallows, suggested utilisation of, 

 to destroy Perkinsiella sacchari- 

 cida in Hawaii, 20 ; increase of 

 Pieris probably favoured by 

 scarcity of, in Switzerland, 83. 



Swamnierdamia pyrella, on apples in 

 Russia, 104. 



Swamp Flag, food-plant of Pyrausta 

 ainsliei in Ohio, 130. 



Swarming Paddy Cutworm (see 

 Spodoptera mauritia) . 



Swede, pests of, in Britain, 58, 155 ; 

 flea-beetles on, in Denmark, 541. 



Sweden, parasites of Enlecayiium 

 coryli in, 125, 126, 127 ; notes on 

 flea-beetles in, 49, 50 ; forest 

 pests in, 50, 1 18, 272 ; bionomics 

 of Miris dolabratus on cereals in, 

 6 ; Phaenodiscus aeneus in, 123. 



Sweet Flag (see A corns calamus). 



Sweet Pea, mosaic disease of, spread 

 by Aphids, 4. 



Sweet Potato {Ipomoea batatas), 

 pests of, in Ceylon, 52 1 ; pests of, 

 in Dutch East Indies, 329, 399 ; 

 pests of, in Japan, 194, 321, 322 ; 

 Diacrisia on, in Madras, 130 ; 



