688 



INDEX 



Oncometopia undata (Orange Jassid), 

 on cotton and citrus in U.S.A., 

 248, 474. 



Oncopelhcs fasciatus, a supposed 



^' cotton pest in St. Vincent, 251. 



Onesia, first larval stage of Phyto 

 melanocephala resembling that 

 of, 35. 



Onion, Tylenchxis on, in Algeria, 32 ; 

 Eumerus strigaius in, in N. 

 America, 129 ; Lachnosterna on, 

 in Antigua, 211 ; pests of, in 

 Britain, "425, 432, 508, 509; con- 

 trol of Hi/lemyia antiqua on, in 

 Canada, 122; Thripstobaci on, in 

 Chile, 429 ; Hylemyia antiqua on, 

 in Colombia, 366 ; Crioceris mer- 

 digera on, in France, 441 ; Hyle- 

 myia antiqua on, in Switzerland, 

 368; pests of, in Sweden, 150, 

 286 ; pests of, in U.S.A., 34, 105, 

 202, 230, 493, 505, 506. 



Onion Fly (see Hylemiyia antiqtia). 



Onion Maggot (see Hylemyia 

 antiqua). 



Onion Moth (see Acrolepia assec- 

 tella). 



Onion Thrips (see Thrips taba^i). 



Oniscus asellus, parasites of, 35. 



onobrychidis, Gontarinia. 



Onobrycliis sativa (Sainfoin), Gon- 

 tarinia onobrychidis on, in Britain, 

 508 ; Sphenoptera laticollis on, in 

 France, 476. 



ononidis, GalUpterus. 



Ononis repens, Aphid on, in Britain, 

 247. 



OnopMlus caridei, gen. et sp. n., 

 parasite of scale-insects in Argen- 

 tina, 428. 



Ontario, orchard pests in, 165; 

 insect pests in, 412. 



oophaga, MestocJiaromyia. 



Oophthora semblidis (see TricTio- 

 gramma). 



Ootetrastichus, establishment of, in 

 Hawaii, 275, 552. 



opaca, Blitophaga ; Eleodes ; Bi- 

 canoptera. 



opaeus, Hylastes. 



Opadia funebrana (see Gydia). 



Opatrinus gemellatus, on cotton in 

 West Indies, 394. 



opercularis, Megalopyge. 



operculella, Phthorimaea. 



Operophthera brumata (see Gheima- 

 tobia). 



Ophideres fullonica (see Othreis). 



Ophion bicarinatus, parasite of flo- 

 mona cojfearia in Ceylon, 540. 



Ophion mercator,- parasite of Neuro- 

 toma flaviventris in France, 564. 



Ophionectria cocci co?a (White-headed 

 Fungus), infesting Lepidosaphes 

 becMi in St. Lucia, 516. 



Ophionellus biguttattts, parasite of 

 rice-borers in Japan, 236. 



Ophiihsa melicerta (see Achaea Jan- 

 ata). 



Ophonus ruficornis, food-plants of, 

 in Central Europe, 96. 



Opius, parasite of Agromyza in 

 Hawaii, 351. 



Opius concolor, importation of, into 

 Italy, against Dacus oleae, 256. 



Opius fletcheri, establishment of, 

 againstDacws cucu7'bitaein Hawaii, 

 39, 69, 127, 161, 225, 275, 357, 

 400, 476, 518, 542. 



Opius humilis, establishment of, 

 against Geratitis capitata in 

 Hawaii, 167, 184, 185, 357, 400, 

 518, 542. 



Opius nanus, species allied to, para- 

 sitic on Agromyza in Hawaii, 351. 



Opogona glyciphaga (Sugar-cane Bud 

 moth), parasitised by Stomato- 

 ceras gracilicorpus in xiustraUa, 

 387. 



Opsimus quadrilineatus, in Pseudo- 

 tsuga taxi folia in California, 363. 



Opsius heydeni, on tamarisk in 

 Germany, 342. 



optatus, Horonotus. 



Opuntia (Prickly Pear), Goenopoeus 

 palmeri breeding in, in California, 

 528 ; Stegodyphus sarasinorum 

 on, in Madras, 474 ; Marmara 

 opuntiella on, in Massachusetts, 

 21 ; use of sap of, in arsenical 

 sprays in West Indies, 472. 



opuntiella, Marmara. 



Orange (Gitrus aurantium), pests 

 of, in E. Africa and Uganda, 51, 

 86 ; pests of, in N. Africa, 38, 

 39 ; Papilio troantiades on, in 

 Argentina, 428 ; Papilio idaeus 

 on, in Brazil, 501 ; scale-insects 

 on, in Britain, 59 ; pests inter- 

 cepted on, in California, 29, 137, 

 293 ; scale-insects on, in Chile, 

 500; pests of, in Fiji, 237; 

 pests of, in Gold Coast, 133 ; 

 Heliothrips haemorrhoidalis on, 

 in Br. Guiana, 387 ; pests of, in 

 West Indies, 105, 341, 517; 

 pests of, in Italy, 143, 443 ; 

 pests of, in Japan, 282, 548; 

 scale-insects on, in Seychelles, 

 376; pests of, in U.S.A., 21, 97, 

 217, 313, 450; pests of, in 

 Zanzibar, 86, 276. 



Orange, Chinese (see Gitrus 

 japonica). 



Orange Beetle (see Diapromorpha 

 melanopus). 



Orange Jassid (see Oncometopia 

 undata). 



Orange Mite (see Brevipalpus 

 obovatus). 



