794 



INDEX. 



segetum, 14 ; injection of, into 

 coconut trees against Rhina bar- 

 birostris, 53 ; hydrocyanic acid 

 gas prepared from, 344. 

 Potassium Nitrate, manuring with, 

 against Oscinella frit and Chlorops 

 taeniopus, 15. 

 Potassium Permanganate, watering 

 with, against Hylemyia antiqiia, 

 50 ; an antidote for hydrocyanic 

 acid, 619. 

 Potassium Polysulphide, spraying 

 with, against Eriophyes vitis, 221 . 

 Potassium Sulphate, percentage of 

 moisture given off by solution of, 

 43. 

 Potassium Sulphide (Liver of Sul- 

 phur), carnations and potato 

 tubers washed with, against mites 

 etc. 110, 147; and calcium 

 arsenate, against orchard pests, 

 267 ; formulae containing, 1 10, 

 147, 267. 

 Potassium Sulpho-carbonate, sug- 

 gested as a soil disinfectant against 

 Coleopterous vine pests, 110. 

 Potato {Solanmn tuberosum) , 336 ; 

 Laphygma exernpta on, in Africa, 

 57 ; pests of, in South Africa, 124, 

 549 ; Phthoriniaea operculella on, 

 in Western Australia, 629 ; Rhizo- 

 glyphus echinopus on, in Brazil, 

 146 ; pests of, in Britain, 11, 284, 

 414, 415 ; pests of, in Czecho- 

 slovakia. 291, 342, 411, 487; 

 pests of, in Canada, 52, 130, 139, 

 161, 229, 321, 417, 418, 420, 421, 

 563 ; Phthorimaea operculella on, 

 in Cyprus, 22 ; pests of, in Den- 

 mark, 61 ; pests of, in France, 52, 

 119, 266, 393, 514, 536, 537, 575, 

 584 ; prohibition against importa- 

 tion of, into France from U.S.A. 

 against Leptinotarsa decemlineata, 

 536 ; pests of, in Germany, 253, 

 260, 263, 442, 466; legislation 

 against Nematodes on, in Ger- 

 many, 371 ; pests of, in Holland, 

 236 ; pests of, in India, 40. 237, 

 360, 398 ; pests of, in Dutch East 

 Indies, 375, 427 ; locusts on, in 

 Italy, 373 ; leaf-roll disease of. in 

 Japan, 558 ; Agroniyza pusilla 

 on, in Russia, 433 ; restrictions 

 on importation of, into Tangan- 

 yika Territory, 274 ; pests of, in 

 U.S.A., 44, 47, 56, 104, 171, 173, 

 186, 187, 193. 217, 243, 244, 248, 

 304. 306, 314, 333. 354. 379, 452, 

 510, 531, 544, 560, 599, 610 ; 

 Julus on, in Uruguay, 227 ; notice 

 of reviews of literature on pests 



of, 13. 18 ; relation of insects to 

 diseases of, 177, 217. 236, 237. 243. 

 244, 354, 558, 599; arsenical 

 sprays and dusts for, 304, 

 478 ; in rotation of crops 

 against Zabrus gibbiis, 17. 438 ; 

 as a trap-crop for Coleopterous 

 vine pests. 1 10 ; unsuccessful as 

 a trap-crop for Piesma capitata, 

 501. 



Potato Aphis, Pink and Green (see 

 Macrosiphuni solanifolii) . 



Potato Beetle, Colorado [see Leptino- 

 tarsa decemlineata) . 



Potato Coccinellid (see Epilachna 

 dregei) . 



Potato Flea-beetle (see Epitrix cucu- 

 meris and Psylliodes affinis). 



Potato Leafhopper (see Empoasca 

 mali) . 



Potato Tuber Moth (see Phthorimaea 

 operculella) . 



Potato Tubers, eelworms intercepted 

 in, in Hawaii, 277 ; pests inter- 

 cepted in. in U.S.A.. 71, 90. 197, 

 357, 358, 471 ; Phthorimaea oper- 

 culella infesting, 52, 230, 360. 



potatoria, Odonestis. 



Potentilla canadensis (Cinquefoil), 

 Noniophila noctuella on, in U.S.A.. 

 516. 



poteriella, Phycita. 



Powder Post Beetle (see Lyctus 

 brunneus) . 



praecox, Sciara. 



praefectata, Xanthorhoe. 



praenitens, Chiloneurus. 



praetiosa, Bryobia. 



Prairie Snowberry (see Symphori- 

 carpus occidentalis) . 



pratensis, Bryobia [see B . praetiosa) ; 

 Lygus. 



Prays oleellus (Olive Moth), in 

 Cyprus, 1. 22 ; in France, 267; 

 in Spain, 598 ; in Tunis, 525 ; 

 Hymenopterous parasites of, 80, 

 525, 598. 



praysivcola, Ageniaspis fuscicollis. 



Prell's Biological Formula. 50 1 . 



Prenes ares (Sugar-cane Skipper), 

 a minor pest in Porto Rico. 97. 



Prenes nero (Sugar-cane Sldpper), 



a minor pest in Porto Rico, 97. 

 Prenolepis, intercepted on coconuts 



in California, 358, 472. 

 Prenolepis fulva, economic import- 

 ance of, in Brazil, 618. 

 Prenolepis imparis, in citrus groves 



in California, 187. 

 Prenolepis longicornis, intercepted 

 in Hawaii, 85. 



preioriensis, Trinerviiermes. 



