INDEX. 



815 



Sinea diadema (Diadem * Assassin 

 Bug), predacious on Epilachna 

 corrupta in U.S.A., 530. 

 sinensis, Ceroplastes ; Thosea. 

 Sinodendron cylindricuni, in Britain, 



382. 

 Sinoxylon bispinosum, in \'ines in 



Italy, 592. 

 Sinoxylon ceratoniae, in Acacia in 



West Sudan, 28. 

 Sinoxylon senegalensis, in Acacia in 



West Sudan, 28. 

 Sinoxylon sexdentaium, in vines in 

 Italy, 592. 



Sinuate Pear Borer (see Agrilus 

 sinuatus) . 



sinuatus, Agrilus ; Typocenis. 



Sipalus hypocrita, on rubber in 

 Ceylon, 165. 



Sipha, notice of characters differ- 

 entiating Laingia from, 218. 



Sipha agropyronensis, on Agropyron 

 glaucwn in Colorado, 59. 



Sipha arenarii, sp. n., on Grami- 

 naceae, 59. 



Sipha flava (Yellow Sugar-cane 

 Aphis), on Graminaceae in North 

 America, 58 ; predacious enemies 

 of, in Porto Rico, 97, 98. 



Sipha glyceriae {schouledeni) , on 

 Holcus in Scotland, 351 ; on 

 Graminaceae, 58. 



Sipha kurdjufuovi, sp. n., on Grami- 

 naceae, 59. 



Sipha maidis, a possible carrier of 

 sugar-cane mosaic in Cuba, 603. 



Sipha schouledeni (see S. glyceriae). 



Sipha tshernavini, sp. n., on Grami- 

 naceae, 59 . 



Sipha uvarovi, sp. n., on Grami- 

 naceae, 59. 



Siphocoryne avenae, Perg. (see 

 Siphonaphis padi americana) . 



Siphonaphis avenae, F. (see S. padi). 



Siphonaphis padi (Oat Aphis), in 

 orchards in U.S.A., 135, 244, 610 ; 

 on Graminaceae, 58 ; bionomics 

 of, 135, 178 ; dusting against, 

 610. 



Siphonaphis padi americana, subsp. 

 n., on Graminaceae, 58. 



Siphonophora cerealis (see Mncro- 

 siphiim granarinni) . 



Siphonophora citrifolii (see Macro- 

 siphum). 



Siphonophora fragariella (see Macro- 

 siphiim). 



Siphonophora leptadeniae, encourage- 

 ment of natural enemies of, in 

 West Sudan, 27. 



Siphonophora pisi (see Acyrtho- 

 siphon). 



Siphonophora ruhi (see Macro- 



siphum) . 

 Siphonophora sonchi (see Macro- 



siphum). 

 Siphonophora ulmariae (see Acyrtho- 



siphon pisi) . 

 sirena, Tettigonia. 

 Sirex augur, attacking silver fir in 



Germany, 4. 

 Sirex gigas, in larch in British Isles, 

 590 ; damaging lead tanks in 

 France, 426 ; measures against, 

 damaging lead chambers in Ger- 

 many, 60 ; natural enemies, of 

 426, 590. 

 Sirex juvencus, in timber in France, 

 2 ; measures against, damaging 

 lead chambers in Germany, 60. 

 Sirex noctilio, in Germany, 4, 60 ; 

 measures against, damaging lead 

 chambers, 60 ; attacking silver 

 fir, 4. 

 siro, Tyroglyphus. 

 Sisal (see Agave sisalana). 

 Sitka Spruce (see Picea sitchensis). 

 Sitodiplosis mosellana (Wheat Midge) , 

 in British Columbia, 564 ; on 

 cereals in Czecho-Slovakia, 487 ; 

 on cereals in Denmark, 60 ; 

 bionomics of, on cereals in U.S.A., 

 247. 

 Sitodrepa, parasites of, in stored 



grain in British Isles, 106. 

 Sitodrepa panicea, in furniture in 

 Britain, 383 ; in Germany, 145, 

 259, 502 ; boring in leather 

 trunks, 145, 502. 

 Sitona, measures against, on pulses 



in Britain, 11. 

 Sitona crinita, bionomics of, in 



British Isles, 177, 285, 474. 

 Sitona flavescens, on clover in 



British Isles, 177, 285. 

 Sitona hispidula, bionomics of, in 

 British Isles, 177, 285, 473; 

 distribution of, 473. 

 Sitona lineata (Bean and Pea Weevil) , 

 food-plants of, in British Isles, 77, 

 177, 285, 383, 474 ; food-plants of, 

 in Czecho-Slovakia, 486 ; food- 

 plants of, in Denmark, 61 ; 

 measures against, on peas in 

 Germany, 14. 

 Sitona puncticollis, on clover in 

 British Isles, 177, 285, 474; 

 parasitised by Gregarines, 474. 

 Sitona regensteinensis, on lupins in 



Scotland, 177. 

 Sitona sulcifrons, bionomics of, in 

 British Isles, 177, 285, 474 ; 

 distribution of, 474. 



