INDEX. 



749 



Sulphur, Liver of (see Potassium 

 Poly sulphide). 



Sulphuric Acid, ineffective against 

 Lepidosaphes ulmi, 165 ; used in 

 production of hydrocyanic-acid 

 gas, 193. 



snlplntrijies, Sphaerophoria. 



Sulphurous Anhydride, against 

 Atta sexdens, 440. 



Sumac {Rhus), little injured by 

 Aspidiotus perniciosus in Illinois, 

 62. 



Sumac Flea-beetle (see Blepharida 

 rhois). 



Sumatra, Scolia erratica in, 291 ; 

 pests of tea and their control 

 in, 414-416 ; tobacco pests 

 and their control in, 41, 417, 

 583. 



sundewalli, Phaenomenis. 



Sundri (see Heriiiera). 



Sunflower {Helianthus), pests of, in 

 Russia, 23, 29, 397 ; pests of, in 

 U.S.A., 285, 462 ; as a trap-crop 

 for Diaprepes farinosus, 397. 



sunia, Xylomyges. 



Super-parasitism, definition of, 16. 



superstitiosus, Dysdercus. 



Surinam (see Dutch Gmana). 



surinavhens is, Sylvanus. 



Surpazol, against rose aphis, 108. 



sutor, Monochavitos. 



suturalis, Epicometis ; Ips (Neoto- 

 micus) ; Lochmaea. 



sutu rellus, Dysdercus. 



Swallow-wort (see Chelidonium 

 ■majus). 



Swallows, destroying vine-moths 

 in France, 341. 



Sii-ammerdammia jjyrella, on apples 

 in Holland, 233, 



Sweden, Argyresihia conjugella in, 

 189 ; bionomics of Coniarinia 

 tritici on cereals in, 532 ; Helio- 

 thrips femoralis in greenhovises in, 

 37 ; turnips imported into 

 Alaska from, little damaged by 

 Chortophila brassicae, 121. 



swederi, Eucomys. 



Swedes, pests of, in British Isles, 

 487, 515. 



Sweet Potato (Ipomoea batatas), 

 pests intercepted on, in California, 

 106, 146, 182, 229, 266, 423, 474, 

 579, 580 ; pests of, in Florida, 

 307 ; pests of, in Br. Guiana, 

 170; pests of, in West Indies, 

 109, 257, 313, 330, 430. 



Sweet Potato Moth (see Protoparce 

 cingulata). 



Sweet Potato Scarab ee (see Eus- 

 cepes batatae). 



Sweet Potato Weevil (see Cylas 

 formiearius). 



swezeyi, Pseudococcus. 



Switzerland, experiments on effect 

 of temperature on Cheimatobia 

 brtmrnta in, 269, 270; experi- 

 ments in control of Clysia ambi- 

 guellain, 113, 191, 373 ; Eriosoma 

 lanigerum, in, 271 ; fruit-tree 

 bark-beetles in, 160; relation 

 between insects and fruit-tree 

 canker in, 419. 



Sword Bean (see Conavalia). 



Sycamore {Acer pseudoplatanus), 

 Macrotoma palmata on, in Egypt, 

 293 ; Coryilima eiliata on, in 

 U.S.A., 419 ; timber of, attacked 

 bv Lyctus spp. in U.S.A., 

 434. 



Sycamore Tingid (see Corythuca 

 eiliata). 



Sycophaga brevitarsus, on figs in 

 Ceylon, 181. 



Sycophaga cyclostigma, sp. n., on 

 figs in Rhodesia, 4. 



Sycophaga spinitarsus, on Fieus 

 variegata in Java, 181. 



Sycophaga tristis, on Ficus glomerata 

 in Java, 181. 



sycophanta, Calosoma. 



Sylepta derogata, control of, on 

 Malvaceous plants in Ceylon, 

 236. 



Sylepta helcitalis, control of, on 

 sweet potatoes in West Indies, 

 257, 330. 



Sylepta ruralis, on maize, 159. 



sylvania, Ghrysobothris. 



Sylvanus mercator, infesting dried 

 apricots in N. Africa, 504; con- 

 trol of, in stored ground-nuts in 

 Senegal, 339. 



Sylvanus {Oryzaephilus) stirinamen- 

 sis, 339 ; "infesting flower bulbs 

 in Holland, 538. 



sylvaticus, Geotrupes. 



Sympherobius californicus (Brown 

 Lace-wing), predaceous on Pseu- 

 dococcus in California, 266 ; para- 

 sites of, 266. 



symjihyti. Aphis. 



Sympiesis, parasite of Phytomyza 

 agiiilegiae in Maryland, 404. 



Sympiesis stigmatipennis, parasite 

 of Phthorimaea operculella in 

 California, 433. 



Sympiezomias decipiens, on cinchona 

 in India, 123. 



Synanthedon pictipes (see Aegeria). 



Syneta albida, distribution and con- 

 trol of, in U.S.A., 14, 224. 



Syneta simplex, confused with 

 S. albida in California, 14. 



'Synopeas raphanistri, sp. n., para- 

 site of Perrisia raphanistri, 319. 



Syntherisma sanguinale, Macrosi- 

 phttan granarimn on, in U.S.A., 

 131. 



