INDEX. 



667 



Omocestus ventralis, destroying 

 turnips in Denmark, 446. 



Omorgus vamidulns, parasite of 

 Bhyacionia buoliana in Holland, 

 234. 



Oncideres cingulatus, on Terminalia 

 catappa in Jamaica, 58. 



Oncophanes hesperidis, sp. n., reared 

 from Hesperid larva in Java, 

 104. 



Oncopsis fitchi, on bircli in Nova 

 Scotia, 177. 



Oncopsis sobrius (Yellow • Leaf- 

 liopper), on birch in Nova Scotia, 

 177. 



Onion (Allium cepa), food-plant of 

 hardbacks in Antigna, 414 ; pests 

 of, in Britain, 209, 355 ; pests 

 of, in Canada, 171, 302, 356, 

 407 ; thrips on, in Cuba, 349 ; 

 Hylemyia antiqaa on, in Denmark, 

 448 ; Galeraca ianaceti on, in 

 Germany, 195 ; pests of, in 

 Holland, 124, 216, 277; Hylemyia 

 nntiqua on, in Italy, 157; Thrips 

 tabaci intercepted on, in Porto 

 Rico, 514 ; use of red-lead 

 powder for protecting seeds of, 

 against ants in Tortola, 337 ; 

 pests of, in U.S.A., 216, 343, 356, 

 417. 



■Onion Fly (see Hylemyia antiqua). 



Onion Maggot (see Hylemyia 

 antiqua). 



Onion Thrips (see Thrips tabaci). 



Ontario, miscellaneous pests in, 

 337 ; orchard pests in, 10, 308, 

 544 ; identity of wheat midge in, 

 187. 



■Onthophagus, destroyed by crows 

 in U.S.A., 203. 



■onusta, Ilacronoctua. 



Ootetrastichus, establishment of, 

 against leaf-hoppers in Hawaii, 

 330, 412. 



Ootetrastichus beatus, parasite of 

 Peregrinus maidis in Hawaii, 330. 



Ootetrastichus gibboni, sp. n., asso- 

 ciated with Languria mozardi in 

 Arizona, 401. 



■opaca, Blitophaga (Silpha) ; Eleodes ; 

 JRicanoptera. 



■opacicollis, Promecotheca. 



Opatrum depressum., measures 

 against, on coffee and tobacco in 

 Java, 363. 



■operculella, Phthorimaea. 



Opheltes glaucopterus, parasite of 

 Cimbex quadrimaculata in Italy, 

 142. 



Ophideres fullonica (see Othreis). 



Ophionectriacoccicola{White-lie&ded 

 Scale Fungus), infesting scale- 

 insects in Florida, 20 ; causing 

 gummosis of orange-trees, 528. 



Ophioneurus signatus, parasite of 

 Bhynchites betulae in Europe, 231. 



Ophiusa eoronat a, on Terminalia 

 belerica in Dutch E. Indies, 388. 



Ophiusa melicer'a (see Achaea). 



Ophthalmothrips pomeroyi, gen. et 

 sp. n., in E. Africa, 262. 



Opius, parasite of Bhagoletis 

 pomonella in Br. Columbia, 186. 



Opius africanus, proposed establish- 

 ment of, against Dacus oleae in 

 Italy, 456. 



Opius concolor, experiments in 

 establishment of, in France, 456, 

 467. 



Opius daeicida, proposed establish- 

 ment of, against Dacus oleae in 

 Italy, 456. 



Opius fletcheri, establishment of, 

 against Dacus cucurbitae in 

 Hawaii, 33, 149, 385. 



Opius humilis, parasite of Ceratitis 

 capitata in Hawaii, 33, 149, 385 ; 

 Pachycrepoideus dubius a secon- 

 dary parasite of, 149. 



Opius lantanae, sp. n., parasite of 

 lantana seed-fly in Hawaii, 437. 



Opius quebecensis, parasite of 

 Pegomyia calypirata in U.S.A., 

 266. 



Opius tryoni, experiments with, 

 against fruit-flies in New South 

 Wales, 33. 



optabilis, Paranagrus. 



opulenta, Trachykele. 



Opuntia, Hyperaspis irimaculata 

 associated with Dactylopius con- 

 fusus on, in Texas, 523. 



Opuntia inermis (Prickly Pear), 

 problem of eradicating, in Aus- 

 tralia, 481. 



Opuntia monocantha (Prickly Pear), 

 attempted utilisation of cochi- 

 neal insects to destroy, in Aus- 

 tralia, 481 ; destroyed by Dacty- 

 lopius conf'iisus indicus in S. India, 

 402. 



optintiae, Asphondylia ; Itonida. 



Orange (Citrus aurantium), pests of, 

 in Assam, 492 ; pests of, in 

 Argentina, 117, 118, 119, 501; 

 Papilio tlioas thoantiades on, in 

 Brazil, 126 ; pests intercepted on, 

 in California, 62, 127, 199, 238, 

 361 ; Chrysomphalus auraniii on, 

 in Ceylon, 402 ; Anasirepha 

 acidusa on, in Dominica, 262 ; 

 measures against Chrysomphalus 

 dictyospermi on, in France, 467 ; 

 Lepidosaphes beclii intercepted 

 on, in Hawaii, 485 ; pests of, in 

 India, 134, 287; A fate submedia 

 infesting, in Jamaica, 58 ; pests 

 of, in Japan, 100, 238 ; Lepidosa- 

 phes beckii on, in Portugal, 7 ; 



