INDEX. 



717 



against scale-insects, 451 ; experi- 

 ments with, against termites, 40 ; 

 and lime, spraying with, against 

 Anthonomiis ponionnn, 155 ; and 

 sulphur, ineffective as a soil- 

 dressing against Decilaus citri- 

 perda, 111 ; formulae containing, 

 451, 465. 



Sodium Cyanide, 29, 30 ; for destroy- 

 ing ants' nests, 131 ; fumigation 

 with, against Pseudococcus bakeri, 

 94 ; against underground insects, 

 22, 45, 308, 309, 461, 482, 513 ; in 

 preparation of hydrocvanic-acid 

 gas, 90, 474. 



Sodium Fluoride, in baits for Polia 

 oleracea, 61, 518. 



Sodium Hyposulphite, experiments 

 with, against termites, 40. 



Sodium Nitrate, soil treated witli 

 solution of, against millipedes, 

 369 ; as a soil-dressing against 

 Thrips tabaci, 281, 362. 



Sodium Oxide, 477. 



Sodium Polysulphide, sodium sul- 

 phur largely consisting of, 31. 



Sodium Sulphocarbonate, experi- 

 ments with, as a soil-dressing 

 against wireworms, 45 ; and 

 nicotine, effect of spraying with, 

 on Aphid eggs, 31. 



Sodium Sulphur, spraying experi- 

 ments with, against Aphid eggs, 3 1 . 



Sodium-resinol Solution, experi- 

 ments with, 543. 



Sogata distincta, on rice in India, 473. 



Sogata pnllescens, on rice in India, 

 473. 



Sogata pitsana, on rice in India, 473. 



Soil, influence of character of, on 

 insect pests, 5, 204, 266, 269, 270 ; 

 sterilisation of, 133, 441. 



sojae, Agromxza. 



solanella, Lita (see Phthorimaea 

 operculella) . 



solani, Haltica ; Phenacoccus. 



solanifolii, Alacrosiphum. 



Solaniim melongena (see Egg-plant). 



Solanum tuberosum fsee Potato). 



Solder, contact with, favouring 

 decomposition in liquid hydro- 

 cyanic-acid, 91. 



Solenopsis, an introduced pest in 

 Mauritius, 499. 



Solenopsis geminata, on Hevca in 

 Dutch East Indies, 537 ; measures 

 against in West Indies, 484. 



Solenopsis geminata maniosa (Fire 

 Ant), measures against, on Passi- 

 flora ediilis in California, 239. 



Solenopsis geminata rufa, intercepted 

 in packing in California, 114. 



Solenopsis molesta, attacking otlier 



insects in U.S.A., 446. 

 Solenopsis pylades, on rice in I3ritish 



Guiana, r45, 472, 533. 

 Solenopsis saevissima,3i.?,^oc\3.icd\\'\\.\\ 



scale-insects in Dutch Guiana, 536. 

 Solidago lanceolata, new Aphid on, 



in U.S.A., 418. 

 solidus, Platypus, 

 soiitaria, Ph vllosticta. 

 solitarius, Catantops. 

 solstitialis, Aniphimallits iPhizo- 



tvogiis) . 

 Solubea pugnax (Stink Bug), on rice 



in ILS.A., 300. 

 Somaliland, Italian, suggested 



measures against Platyedra gossy- 



piella on cotton in, 202. 

 somniaria, Ellopia. 

 sonchi, Macrosiphiim . 

 Sonchus (Sowthistle), Aphids on, in 



Britain, 58 ; food-plant of insect 



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

 Soot, as a soil-dressing against flea- 

 beetles, 287. 

 Sooty Mould, Lepidosaphes spp. 



associated with, 35, 293. 

 sophorae, Brassolis. 

 sorbi, Aphis, 

 sordidus, Cosmopolites. 

 Soyghastrum nutans, Heteroneura 



setariae on, in North America, 8. 

 sorghi, Aphis. 

 Sorghum (Dura), Diatraea saccha- 



ralis on, in Guadeloupe, 298 ; 



pests of, in Guam, 148 ; pests of, 



and their control in Anglo-Egyp- 

 tian Sudan, 172, 198 ; mosaic 



disease of, 531. 

 Sorghum halepense, Monecphora 



bicincta on, in Cuba, 228. 

 Sorghum vulgare, Chilo sif>iplex on, 



in Mesopotamia, 478 ; Aphis 



niaidis on, in Tripoli, 159. 

 soror, Lachnosterna ; Oscinis (see 



Oscinella frit). 

 Sorosporella uvella, infesting Noctuid 



larvae, 169. 

 Sorrel Cutworm (see Acronycta 



rumicis). 

 Sosiopsila trisetosa, gen. et sp. n., in 



Portuguese East Africa and 



Nyasaland, 264. 

 Sour Sop (see Anona muricata). 

 Southern Corn Root Worm (see 



Diabrotica duodecimpunctata) . 

 Southern Green June Beetle (see 



Allorrhina nitida). 

 Southern Pine Beetle (see Den- 



droctonus frontalis) . 

 Southern Tobacco Worm (see 



Protoparce sexta) . 



