804 



INDEX. 



Rhododendron ponticum, less sus- 

 ceptible to Stephanitis rhododendri 

 than rhododendron hybrids in 

 Britain, 554. 



Rhododendron Bug (see Stephanitis 

 rhododendri) . 



rhodophaga, Neocerata {Dasyneura) . 



Rhogas circumscriptus, parasite of 

 Cidaria dilutata in Sweden, 149. 



Rhogas lefroyi (see Microbracon) . 



rhombota, Agriophora. 



Rhopalimorpha obsciira (One-striped 

 Plant Bug), food-plants of, in 

 New Zealand, 29. 



Rhopalosiphum davisi, sp. n., food- 

 plants of, in North America, 

 58. 



Rhopalosiphum dianthi (see Myzns 

 persicae) . 



Rhopalosiphum eriophori, on Erio- 

 phorum angustifolium in Scotland, 

 590 ; fungus infesting, 590. 



Rhopalosiphum howardi (see R. 

 davisi) . 



Rhopalosiphum lactucae, on Sonchus 

 in Argentina, 606 ; R. ribis 

 considered a synonym of, 606. 



Rhopalosiphum {Aphis) nymphaeae, 

 control of, on almonds in Cali- 

 fornia, 73 ; migrations of, in 

 Germany, 262. 



Rhopalosiphum papaver is, sp. n., on 

 Papaver somniferiim in Formosa, 

 408. 



Rhopalosiphum persicae (see Myzus). 



Rhopalosiphum primifoliimi, dis- 

 seminating Bacillus amylovorus in 

 U.S.A., 494. 



Rhopalosiphum ribis, on currant and 

 gooseberry in Denmark, 62 ; con- 

 sidered a synonym of R. lactucae, 

 606. 



Rhopobota naevana [vacciniana) 

 (Blackhead Fireworm), bionomics 

 and control of, on cranberry in 

 U.S.A., 55, 247, 597. 



Rhopobota vacciniana (see R. nae- 

 vana). 



Rhubarb, restrictions on importa- 

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

 293 ; restrictions on transporta- 

 tion of, in Massachusetts, 25. 



Rhumbler's Biological Formula, 50 1 . 



Rhus, pests of, in Pennsylvania, 457: 

 favouring Polychrosis viteana, 190. 



Rhus diver siloba (Poison Oak), 

 Pseiidococcus longisetosus and ants 

 on, in California, 484. 



Rhus hirta (Sumac), new bark-beetle 

 in, in Missssippi, 362. 



Rhus toxicodendron, Cerambycids in, 

 in Pennsylvania, 457. 



Rhus typhina, Phloeotrya quadri- 

 maculata in, in Pennsylvania, 457. 



Rhyacionia, on Piniis longifolia in 

 India, 389. 



Rhyacionia buoliana (European Pine- 

 shoot ]\Ioth), in Czecho-Slovakia, 

 487 ; bionomics of, in France, 54 ; 

 practically eliminated in nurseries 

 in ]\Iassachusetts, 25 ; in Sweden, 

 65. 



Rhyacionia conistockiana, parasitised 

 by Ichnetimon comstocki in Penn- 

 sylvania, 457. 



Rhyacionia duplana, on pine in 

 Sweden, 65. 



Rhyacionia resinella, on pine in 

 Sweden, 65. 



Rhyacionia turionana, on pine in 

 France, 54 ; on pine in Sweden, 

 65. 



Rhynchaenus fagi (Beech Weevil), 

 bionomics of, in Czecho-Slovakia, 

 342 ; in beech forests and orchards 

 in Denmark, 627 ; bionomics of, 

 in Holland, 128. 



Rhynchaemis mangiferae, on mango 

 in India, 399. 



Rhynchaenus pallicornis (Apple Flea- 

 weevil), disseminating Bacillus 

 amylovorus in U.S.A., 494. 



Rhynchaenus rufipes (Willow Leaf- 

 miner), bionomics and control of, 

 in U.S.A., 114, 350, 382. 



Rhynchagrotis placida, on poplar in 

 Canada, 139, 398. 



Rhynchiies auratus, notice of female 

 genitalia of, 435. 



Rhynchites bacchus, on plum in 

 Bessarabia, 208 ; on apple in 

 France, 266 ; in Russia, 117 ; on 

 apple in Sicily, 444. 



Rhynchites betulae, on vines in Italy, 

 592. 



Rhynchites betideti (see Byctiscus 

 betulae) . 



Rhynchites bicolor, measures against, 

 on roses in U.S.A., 317. 



Rhynchites conicus, in orchards in 

 France, 266. 



Rhynchites cupreus, on cherries in 

 France, 266. 



Rhynchites pauxillus, in Bessarabia, 

 208 ; in Russia, 117. 



Rhynchium atrwn, coconuts probably 

 pollinated by, in Philippines, 230. 



Rhyncholophus phalangeoides, prob- 

 ably attacking Longitarsus par- 

 vidiis in British Isles, 340. 



Rhynchophorus, on coconuts in 

 Cochin-China, 35 ; Longicom 

 attacking date palms erroneously 

 recorded as, in Mesopotamia, 160. 



