624 



INDEX. 



io, Vanessa. 



Iowa, Eriosoma lanigerum from, in- 

 tercepted ill California, 236. 



Iphianlax morleyi, sp. n., parasite of 

 Phoracantha recurva in Australia, 

 510. 



Ipliiaulax pTioracanthae, sp. n., para- 

 site of Phoracantha recurva in 

 Australia, 510. 



IpMaulax rubriceps, sp. n., parasite 

 of Phoracantha recurva in Austra- 

 lia, 510. 



Ipomoea, Ecpaniheria eridanus on, 

 in Porto Rico, 279. 



Ipomoea batatas (see Sweet Potato). 



Ips, destroyed by woodpeckers in 

 Britain, 24. 



Ips balsameus, in forest trees in 

 Canada, 118. 



Ips chagnoni, sp. n., in conifers in 

 Canada, 384. 



Ips concinnus, in pines in California, 

 113. 



Ijys duplicatus, in spruce in Finland, 

 506. 



Ips laricis, in spruce in Finland, 

 506. 



Ips longifolia, in Pinus longifolia 

 in India, 229, 359. 



Ips ribbentropi, in forests in India, 

 359. 



Ips sexdentatus, in Russia, 330, 412. 



Ips suturalis, in spruce, in Finland, 

 506. 



Ips typographus, in spruce in Fin- 

 land, 506 ; experiments with, in 

 spruce in Sweden, 507. 



Ips vancouveri, sp. n., in Pinus 

 moniicola in Canada, 384. 



irava, Hidari. 



iridescens, Levuana. 



Iridomyrmex humilis (Argentine 

 Ant), distribution and control of, 

 in U.S.A., 14, 236, 473, 535. 



Iris, pests intercepted on, in Cali- 

 fornia, 475 ; Aphthona non- 

 striata on, in Russia, 23 ; pests 

 of, in U.S.A., 133, 246. 



Iris Borer (see Macronoctua onusta). 



Iron Arsenate, preparation of, 308. 



Iron Sulphate, formula for use of, 

 in orchards, 414, 496, 501 ; spray- 

 ing experiments with, against 

 cranberry pests, 175 ; percentage 

 of, in arsenicals, 307. 



irregxdaris, Eriococcus. 



irrorata, Aulacizes ; Conosia. 



irroratus, Phlepsius. 



Isaniris, on Hevea brasiliensis in 

 the Belgian Congo, 389. 



Isaria, infesting wireworms in Bri- 

 tain, 235; infesting sugar-cane 

 weevil in St. Vincent, 250. 



Isaria barheri, infesting Diatraea 

 saccharalis in Jamaica, 423. 



Isaria densa, infesting cockchafers, 

 302. 



Isaria destructor (see Metarrhizium 

 anisopliae). 



Isaria farinosa, infesting Lygaeone- 

 matus erichsoni in Canada and 

 England, 244 ; infesting Phtho- 

 riinaea operculella, 302. 



Isehnaspis filiformis, on oil -palm 

 in Seychelles, 442. 



Isehnaspis longirostris (Thread 

 Scale), in Barbados, 257 ; inter- 

 cepted in California, 363; on Grap- 

 tophyllum hortensis in Ceylon, 13 ; 

 intercepted on Ixora in Hawaii, 

 420 ; food-plants of, in New 

 Jersey, 205 ; on coffee in Zanzi- 

 bar, 128. 



Ischnodemus falicus, on Solanum 

 carolinense in U.S.A., 185. 



ischnogaster, Casinaria. 



Ischnotrachelus humeralis, on Hevea 

 brasiliensis in the Belgian Congo, 

 389. 



Isle of Wight Disease (see Nosema 

 apis). 



Isodon puncticollis, on sugar-cane 

 in Queensland, 346. 



Isosoma, on grain in Russia, 57. 



Isosoma grande, on wheat in U.S.A., 

 448. 



Isosoma noxiale, on cereals in 

 Russia, 330. 



Isosoma orcMdearum (Cattleya Fly), 

 intercepted on orchids in Cali- 

 fornia, 534 ; on orchids in 

 Canada and U.S.A., 31, 76, 118, 

 259. 



Isosoma tritiei (Wheat Joint Worm), 

 on cereals in Quebec, 486. 



Isosoma vaginicolum, sp. n., on 

 wheat in U.S.A., 448. 



isthmia, Brassolis. 



Italian Somaliland, Apliids and 

 Coccids in, 160, 203. 



italicus, Galliptamus (Caloptenus). 



Italy, pests of forests in, 117,492; 

 Poropoea spp. parasitising beetles 

 in, 425 ; comparative efficiency 

 of Pasta Caffaro and Bordeaux 

 mixture on vines in, 349 ; biono- 

 mics and control of Phylloxera 

 in, 156-158, 237, 309; Chalcids 

 of, 306 ; Trama radicis and 

 Anoecia parasitised by Nematode 

 in, 269 ; Cladosporium infesting 

 Chrysomphalus dictyospermi in, 

 222 ; bionomics and control of 

 Tychius quinquepunctatus on 

 beans in, 219; pests of olives 

 and their control in, 54, 206, 402, 

 434, 438 ; bionomics and control 

 of Aulacaspis pentagona in, 15, 

 76, 200, 489 ; bionomics of Anar- 

 sia Uneatella in, 17; manual of 



