738 



INDEX. 



Iphidicles ajax, parasitised by The- 

 rion niorio in Canada, 588. 



Ipomoea batatas (see Sweet Potato). 



Ips, in Piniis in California, 579. 



Ips acuminatus (Six-toothed Pine 

 Beetle), in Britain, 382 ; in forests 

 in Germany, 144. 



Ips amitinus, 203. 



Ips calligraphus, in white pine in 

 Connecticut, 337. 



Ips curvidens, attacking silver fir in 

 Germany, 4. 



Ips duplicatus, confused with I. 

 typographus in North Russia, 203 ; 

 in pine and spruce in Sweden, 

 203. 



Ips erosus, I. tridentaitts related to, 

 144. 



Ips laricis, in forests in British Isles, 

 476 ; in Germany, 144. 



Ips longicollis, in forests in Alsace 

 and Silesia, 144. 



Ips longifolia, in forests in India, 

 389, 487, 565, 573 ; parasitised by 

 Roptrocerus sulcatus, 573. 



Ips pint, in pines in Canada, 35 ; 

 in pines in U.S.A., 521 ; destroyed 

 by woodpeckers, 52 1 . 



Ips plastographus, in Monterey pine 

 in California, 382. 



Ips proxunus, in forests in Germany, 

 144. 



Ips radiatae, in Monterey pine in 

 California, 382. 



Ips sexdentatus, in forests in Ger- 

 many, 144. 



Ips tridentatus, sp. n., in the Taurus, 

 144. 



Ips typograplms (Spruce Bark- 

 beetle), in forests in Sweden, 64, 

 203, 460 ; /. duplicatus confused 

 with, in North Russia, 203. 



irava, Hidari. 



iridescens, Levuana. 



Iridoniynnex analis, in houses in 

 Mississippi, 310. 



Iridomyrmex conifer (Twig Mount 

 Ant), on Eucalyptus gompho- 

 cephala in Western Australia, 630 . 



Iridomyrmex humilis (Argentine 

 Ant), in France, 150, 267, 268; 

 danger of importation of, into 

 Germany, 150 ; legislative and 

 other measures against, in Italy, 

 492, 525, 558 ; introduced into 

 Madeira on sugar-cane from 

 British Guiana, 492 ; measures 

 against, in U.S.A.. 186, 193, 309, 

 310, 529, 594 ; notice of dis- 

 tribution of, 558 ; bionomics of, 

 186 ; associated with Apliids and 

 Coccids, 193, 267, 492, 594. 



Iridomyrmex humilis var. arrogans, 



268. 

 Iris, pests imported with, into 



British Columbia, 126 ; Macro- 



noctua onusta on, in U.S.A., 168 ; 



pests intercepted on, in U.S.A., 



251, 380. 

 Iris, Japanese, Mononychus vulpe- 



culus on, in Connecticut, 337 ; 



Curculionid larva intercepted in 



soil round roots of, in U.S.A., 71. 

 Iris Borer (see Macronoctua onusta). 

 irkutensis, Pityogenes. 

 Iron, electric charges of arsenicals 



of, 313, 425. 

 Iron Sulphate, 446 ; in spray formula 



against Anthonomus pomorum, 



241 ; injection of, into coconut 



trees against Rhina barbirostris, 



53. 

 irregularis, Calotermes. 

 irresectus, Bruchus. 

 irritator. Ichneumon, 

 irrorata, Billaea. 

 Isaria, 399 ; probably infesting 



Anthonomus pomorum in British 



Isles, 608. 

 Isaria crinita, infesting Polistes 



hebraeus in Fiji, 215. 

 Isaria densa, utilisation of, against 



noxious insects in France, 603. 

 Isaria destructor, utilisation of, 



against noxious insects in France, 



603. 

 Isariafarinosa, utilisation of, against 



noxious insects in France, 603 ; 



infesting Lygaeonematus erichsoni 



in Russia, 434. 

 Ischiogonus syagrii, sp. n., parasite 



of Syagrius fulvitarsis in New 



South Wales, 88, 528 ; bionomics 



and establishment of, in Hawaii, 



87, 632. 

 Ischnaspis filiformis (see /. longi- 



rostris) . 

 Ischnaspis longirostris , food-plants 



of, in Jamaica, 166, 167 ; on 



palms in greenhouses in U.S.A., 



480 ; fumigation with hydro- 

 cyanic acid against, 480 ; infested 



with Broomella ischnaspidis , 604. 

 Ischnura posita, natural enemy of 



Crioceris spp. in U.S.A., 333. 

 Isle of White Bee Disease, in British 



Isles, 353, 367 ; in France, 426 ; 



danger of introduction of, into 



U.S.A., 381, 406. 

 ismene, Melanitis. 

 isocrates, Virachola. 

 isomerus, Cladius. 

 Istria, Chrysanthemum cinerariae- 



folium an indigenous plant in, 231 . 



