660 



INDEX. 



Ipomoea batatas (see Sweet Potato). 



Ipomoea hederacea, new Aphid on, 

 in Japan, 548. 



Ipomoea pescaprae, food-plant of 

 insect pests in U.S.A., 373, 414. 



Ips acuminatus, in Sweden, 89, 147. 



Ips concinnus, in conifers in N. 

 America, 263. 



Ips curvidens, parasitised by Plega- 

 derus rnlneratus in Bosnia, 410. 



Ips fasciatus (see Glischrochilus). 



Ips larii'is, I. proximus confused 

 with, in Sweden, 89. 



Ips longijolia, in conifers in India, 

 522. 



Ips mannsjeldi, in conifers in 

 Bosnia, 410. 



Ips proximus, in Sweden, 89, 147. 



Ips quadripuslulatus (see Glis- 

 chrochilus). 



Ips sexdentatus, in conifers in 

 Bosnia, 410; in Sweden, 89, 147. 



Ips typographns (Spruce Bark- 

 Beetle), in conifers in Bosnia, 

 410; in European forests, 521; 

 in forests in Sweden, 89, 147, 287. 



Ips roTontzoivi, parasitised by Lae- 

 mophloeus alternans in Bosnia, 

 410. 



ircutensis, Trichodes. 



iridescens, Lemiana. 



iridicolor, Scolia. 



Iridomyrmex, intercepted in U.S.A., 

 206 ; natural enemy of boll- 

 weevil in U.S.A., 248. 



Iridomyrtnex humilis (Argentine 

 Ant), measures against, in S. 

 Africa, 181, 239 ; predaceous on 

 Cydia pomonella in S. Africa, 

 324 ; intercepted in Hawaii, 

 476 ; measures against, in U.S.A., 

 168, 313, 497; associated with 

 scale-insects in U.S.A., 28, 97, 

 168, 216, 414. 



Iris, Eumerus strigatus in bulbs of, 

 in N. America, 129 ; Adoretus 

 umhros'us tenuimaculatus pro- 

 bably introduced into New Jersey 

 witli roots of, from Japan, 489. 



Iron Hydroxide, for emidsifying 

 petroleum, 27. 



Iron Salts, use of prickly pear sap 

 in sprays containing, 472. 



irregidaris, Systates. 



irrorala, Aulacizes ; Boarmia. 



irroratum, Elaphidion. 



Isabella, Isia. 



Isaria farinosa, infesting" Lymantria 

 dispar in Connecticut, 459. 



Ischnasj)is longiroslris (filiformis), 

 on Coffea liberica in San Thome, 

 384 ; on palms and coffee in 

 Seychelles, 68, 375, 376. 

 Ischnorhina sanguinea, in Br. 

 Guiana, 386. 



Ischnolrachelus anchor alls, on cacao 

 in Belgian Congo, 79. 



Ischnnra posita, predaceous on 

 Crioceris asparagi in U.S.A., 215. 



Isia isahella, percentage of males 

 of, taken at light-traps in U.S.A., 

 487. 



isitis, Psylla. 



Isle of AVight Bee Disease [Nosema 

 apis), infesting bees in Britain, 

 327 ; disease resembling, in bees 

 in Canada and U.S.A., 490. 



Iso-eugenol, experiments in trap- 

 ping fruit- flies with, 423. 



Isodon ptincticolUs, on sugar cane 

 in Australia, 166. 



Isosoma, parasitised by Habrocytus 

 arJ:ansevsis in N. America, 69. 



Isosoma albomaculatum, parasitised 

 bv Eupelmiaus saltator in U.S.A.. 

 304. 



Isoso7n/i. cattleyae, intercepted on 

 orchids in California, 137. 



Isosoma grande, seasonal dimor- 

 phism of, 328. 



Isosoma, maculatum, parasitised by 

 E^ipelminus saltator in U.S.A., 

 304. 



Isosoma orchidearum (Cattleya Fly), 

 intercepted on orchids in Cali- 

 fornia, 101 ; bionomics and con- 

 trol of, on orchids in New Jersey, 

 326. 



Isosoma tritici (Jointworm), on 

 wheat in Indiana, 479 ; para- 

 sitised by Eupelminus saltator 

 in U.S.A., 304; seasonal dimor- 

 phism of, 328. 



Isosoma. vwjinicola, parasitised by 

 Eupelminus saltator in U.S.A., 

 304. 



isthmia, Brassolis. 



Istrian Gall, use of, for medicine, 244. 



Italy, pests of ligs in, 75-77 ; 

 pests of forests in, 7, 77, 144; 

 measures against locusts in, 500 ; 

 miscellaneous pests in, 77, 143, 

 172, 366, 382, 443, 468, 469 ; 

 pests of olives in, 143, 530; 

 yjcsts of vines in, 56, 143, 144, 

 172, 478; Ceroplastes rusci on 

 figs imported from, into Britain, 

 59 ; natural enemies of Chry- 

 somphalus diclyospermi in, 9, 

 35 ; importation of Opius con- 

 color into, against Dacus oleae, 

 256 ; legislation against Thyl- 

 loxera in. 136 ; silkworms in, 

 211, 437. 



Itoplectis conguisitor (see Pimpla). 



lioplectis maculator, parasite of 

 Coleophora Juscedinella in Sweden, 

 94. 



Ityeorsia, on Austrian pine in Con- 

 necticiil, 457. 



