744 



INDEX. 



Sodium Fluoride, dusting with, 

 against Iiouseliold pests, 69, 400, 

 547. 



Sodium Hydroxide, in formula 

 against Iridomyrmex humilis in 

 U.S.A., 15. 



Sodium Hyposulpliate, for keeping 

 ants from beehives, 151. 



Sodium Sulphide, inferior to lime- 

 sulphur, 343 ; scorching effect 

 of, and lead arsenate on foliage, 

 345 ; reduction of toxic action 

 of, when used with barium tetra- 

 sulphide, 347 ; toxic value of, 

 against Sygmia pliaeorrhoea 

 (Euproctis chrysorrhoea), 347. 



Sodium Sulphite, ineffective against 

 Bhynchophorus ferrugineus, 500. 



Sogata distincta, in India, 124. 



Sogata pallescens, in India, 124. 



Sogata pusana, in India, 124. 



Soja hispida (see Soy Bean). 



solanella, Lita (see Phthorimaea 

 operculella). 



solani. Aphis ; Oudablis ; Rhopalo- 

 siphum. 



solanifolii, Macrosiphum. 



Solanum, Gassida pallidula on, in 

 U.S.A., 11 ; Psylliodes ajjinis 

 on, in ^Germany, 97. 



Solaniun douglassi (Night-shade), 

 Coccus citricola on, in U.S.A., 

 409. 



Solanum carolmense (Horse Nettle), 

 Trichobaris trinotata on, in U.S.A., 

 141. 



Solanum melongena (see Egg-plant). 



Solanum nigrum (Common Night- 

 shade), Epitrix cucumeris on, in 

 U.S.A., 141 ; food-plant of to- 

 bacco flea-beetles in Porto Rico, 

 312. 



Solanum rostratum (Bull Nettle), 

 Trichobaris trinotata on, in U.S.A., 

 141. 



Solanum torvum, food-plant of to- 

 bacco pests in Porto Rico, 227, 

 312, 560. 



Solanum triflorum, food-plant of 

 Silpha bituberosa in Montana, 

 1210. 



Solanum tuberosum (see Potato). 



Solanum verbascifolium, fruit-flies 



attacking, in India, 3. 

 Solenopsis, predaceous on Antho- 



nomus grandis in U.S.A., 472. 

 Solenopsis corticalis ama0o?»icMs( Red 

 Household Ant), boring in wood 

 in Br. Guiana, 170. 

 Solenopsis geminata (Fire Ant), pre- 

 daceous on AnthoHomus grandis 

 in Alabama, 381. 

 Solenopsis geminata rufa, supplan- 

 ted by Pheidole megacephala in 

 Hawaii, 400. 



Solenopsis pylades, predaceoiis on 

 Diatraea in Br. Guiana, 169 ; 

 associated with scale -insects in 

 Br. Guiana, 504. 



Solidago (Golden-rod), a food-plant 

 of Cyllene robiniae in Oklahoma, 

 398 ; Pemphigus betae on, in 

 U.S.A., 17. 



Solidago canadensis, food-plant of 

 insect pests in Minnesota, 463. 



Solidago virga-aurea, Aphis myoso- 

 tidis on, in Russia, 562. 



Solindemia, parasite of Pectino- 

 phora gossypiella in Brazil, 537. 



solitaria, Prestwickia. 



Solomon Islands, coconut pest.> in, 

 418, 521. 



somereni, Lecaniuin. 



Sonchus (Sow Thistle), Bhopalo- 

 siphum ribis on, in Russia, 561. 



Sooty Fungus, developing inde- 

 pendently of insects, 45 ; of 

 mango, in Br. Guiana, 170 ; of 

 vines, copper sulphate against, 

 149 ; (see Capnodium). 



Sooty Mould (see Meliola). 



sophorae, Brassolis. 



sorbi. Aphis. 



sordidus, Aphanus ; Cosmopolites ; 

 Scymnus. 



sorghi, Uraphis. 



Sorb Tree (see Service Tree). 



Sorbus aria, Syntomaspis druparum 

 on, in U.S.A., 122. 



Sorbus scandica, Syntomaspis dru- 

 parum on, in U.S.A., 122. 



Sorghum (Androjiogon sorghum) 

 (Broomcorn, Cholam, Juar, Su- 

 dan Grass), pests of, in E. Africa, 

 112; pests of, in U.S.A., 434, 

 578 ; pests of, in India, 3, 1 24, 556 

 Aphids on, in Antigua, 394 

 slightly attacked by Cyrtacantha 

 cris nigricornis in Java, 85 

 Delphacids on, in Philippines, 

 313. 



Sorghum halepense (see Johnson 

 Grass). 



, soror, Diabrotica ; Polyzostera. 



Sorosporella uvella, infesting Euxoa 

 tessellata in America, 484. 



Sorrel, Taxonus glabratus on, in 

 America and Europe, 242 ; Aphis 

 radicola on, in Russia, 562. 



Sour-brood, in bees, caused by 

 Streptococcus apis, 352. 



Soursop (see Anona inuricata). 



South American Migratory Locust 

 (see Schistocerca paranensis). 



Southern Corn Root-worm (see 



Diabrotica duodecimpunctata). 

 Sowbugs, destruction of, in mush- 

 rooms in U.S.A., 424. 

 Soy Bean {Glycine soja, Soja his- 

 pida), infested with Lasioderma 



