INDEX. 



733 



Sweet Potato Leaf -folder (see 

 Pilocrocis tripunctaia). 



Sweet Potato Scarabee (see Eus- 

 cepes batatae). 



Sweet Potato Weevil (see Cylas 

 formicarius). 



Sweet Potato Whitefiy (see Bemesia 

 inconspicua). 



sivezeyi, Charitopodinus (Eiipel- 

 minus). 



Swietenia mahagoni, pests of, in 

 Dutch E. Indies, 350. 



Swift, a beneficial bird in Britain, 478 



Switzerland, government assistance 

 for measures against Clysia am- 

 biguella in, 381 ; miscellaneous 

 insect pests in, 173, 366-368, 381, 

 514 ; collection and utilisation 

 of Melolontha melolontha in, 257 ; 

 organised campaign against Pieris 

 in, 414. 



Sword Bean (see Canavalia). 



Syagrus morio, on Thespesia in 

 Nyasaland, 69. 



Sycamore, Ai)his platanoides on, 

 in Britain, 247 ; pests of, in 

 U.S.A., 34, 53. 



Sycamore, Western (see Platanus 

 occidentalis). 



Sycamore Fig (see Ficus syeomorus). 



Sycamore Lace-bug (see Corythuca 

 ciliata). 



sycophanta, Calosoma. 



SycopJiila inceria, on Fictis laurina 

 in Barbados, 274. 



Sycosoter lavagnei, gen. et sp. n., 

 bionomics of, in France, 72, 328. 



Sylepta d^rogata, on cotton in Cey- 

 lon, 539 ; on Thespesia in Nyasa- 

 land, 69. 



Sylvanus (see Silvanus). 



sylvestris, Anthocoris. 



Sympherohms angustus, predaceous 

 on Chromaphis jiiglandicola in 

 California, 415. 



Symydohius ameriea/nus, sp. n., on 

 birch in Ontario, 529. 



Symydohius oblongus, in Europe, 529. 



Synanthedon geliformis (seeAegeria). 



Synaphoeta guexi, in trees in Cali- 

 fornia, 528. 



Synedrella nodiflora, Tischeria on, 

 in St. Vincent, 121. 



Syneta albida, in Br. Columbia, 24. 



Syntomaspis, infesting seeds of 

 conifers in Japan, 403 ; unidenti- 

 fied species of, parasitising Bhyn- 

 chites bacchus in Sicily, 296. 



Syntomaspis amelanchieris, sp. n., 

 infesting seeds of AmelancJiier 

 canadensis in U.S.A., 550. 



Syntomaspis druparum, infesting 

 apples in Central Europe, 343. 



Syntomaspis pubescens, infesting 

 apples in Central Europe, 343. 



S yyitomosphyrum esuriis, parasite of 

 Hyphantria ctinea in Connecticut, 

 456. 



Syria, wood-borers in, 50. 



syringella, Gracilaria (Xanthospilap- 

 teryx). 



syrp hid is , Neocato laccus . 



Syrphids, depollinating flowers in 

 Britain, 114. 



Syrphus americaniis, predaceous on 

 Aphids in U.S.A., 164, 456. 



Syrphus knabi, predaceous on 

 Aphids in Maine, 242. 



Syrphus nitidicollis, predaceous on 

 Aphids in Holland, 136. 



Syrphus oronoensis, sp. n.. pre- 

 daceous on Aphids in Maine, 241. 



Syrphus 2>7/rfls/ri (see Lasiophihi- 

 cus). 



Syrphus xanthostomus, S. Tcnabi 

 erroneously recorded as, in 

 Maine, 242. 



Sy states amabilis, on cacao in Bel- 

 gian Congo, 79. 



Systates cribripennis, on coffee in 

 Br. E. Africa, 15. 



Systates irregularis, on coft'ee in 

 Br. E. Africa, 15. 



Systates viaynei. on cacao in Belgian 

 Congo, 79. 



Systates ramosus. on cacao in Bel- 

 gian Congo. 79. 



Systena frontalis (Cranberry Flea- 

 beetle), bionomics and control 

 of, in U.S.A., 562. 



tabaci, 3Iacrosiphum ; Thrips. 



taban if or mis , Paranth rene . 



Tachardia albizziae, on litclii in 

 Ceylon, 539. 



Tachardia decorella, on tea in India, 

 187 ; bionomics of, on custard 

 apple etc. in Uganda, 52, 85, 87. 



Tachardia lacca (Lac Insect), bio- 

 nomics of, in India, 513. 



Tachardia longisetosa, on custard 

 apjjle in Uganda, 52. 



Tachina, parasite of Hyphantria 

 cunea in Connecticu.t, 456. 



Tachyporus chrysomelinus, pre- 

 daceous on Hylastes in Scotland, 

 116. 



taedata, Psyllobora. 



Taeniopteryx nigripennis, food- 

 plants of, in U.S.A., 388, 389. 



Taeniapteryx pacifica, bionomics of, 

 and measures against, in U.S.A., 

 388. 



Taeniopteryx pallida, food-plants 

 of, in U.S.A., 388, 389. 



taeniopus, Chlorops. 



Taeniothrips inconsequens (Pear 

 Thrips), on fruit-trees in the 



