516 



o. 



Oak, lOllopia soniniaria on, 359. 



furniture ilauiagetl by borers, 467. 



list of caterpillars affectiiisi, 256. 

 Oat, destruction of erops by Aphis, 57. 

 Oats, Meromyza and Oscinis infesting, 82. 



root-disease of, 264. 

 ffinothera biennis, Graptodera on, 26. 



Lepidoptera bred from, 275. 

 Okra, fed iijjon by Proconia iindata,3:?S. 

 Onions, wirewortus damaging, 166. 



"white blast" on, caused by Thrips, 301. 

 Opuntia engelmannl, Syrphid larvae in. 319. 

 Orange, bored by Curculionid in Australia, 434. 



bored l)y Xyleborus pubescens, 167. 



Ceratitisattacking fruit of, 6. 



gas experiments on, 457. 



infested by long scale, 398. 



plant bug on, 410. 



red scale of, 417. 



rust mite of, 434. 



tree borers ot, 418. 

 Osage orange, food of silk^vorm, 301. 

 Oxalis stricta, Aphis on, 235. 

 Ozonium, on cotton, 263. 



Palm, exenjpt from Icerya in Honolulu, 330. 



Panicum, Aphis on, 235. 



Pansy, Oniscus injuring, 69. 



Parsnip, Papilio on, 338. 



Pea, germination of weeviled seeds, 485. 



weevil of, 252, 256, .359, 365. 

 Peach, a fruit-fly of, in Bermuda, 5. 



Aphis of, 270. 



Ceratitison,120. 



Chrysoehus on, 162. 



Diabrotica injuring, 84. 



food-plant of Lecanium pruinosuni, 384. 



injured by green beetle, 425. 



Phkeotribus liminaris on, 452. 



rose-chafer on, 221, 271. 



scale on, in Australia, 435. 



trees killed by Scolytua rvigulosus, 298, 299. 



twigs said to be girdled by Oberea, 298. 

 Pear, Aragnomus attacking, 37. 



Aspidiotus on, 68. 



damaged by Psylla, in Russia, 393. 



Hyphantria damaging trees, 338. 



insecticides for, 364. 



in.sects alfecting, in Cornell bulletin, 308. 



rose-cliafer on, 221, 271. 



Sciara larva» under liark, 126. 



Selandria on, in Australia, 480. 



trees killed by Scolytus rugulosus, 299. 

 Pecan, Oncideres on, 338. 



Phylloxera galls on, 466. 



trees defoliated by Hyphantria, 338. 

 Peppergrass, poisoned, for cutworms, 248. 

 Pepul, destroyed by India locust, 4.3.3. 

 Persimmon, defoliated by Hyphantria, 338. 



Oncideres on, 338. 

 Phleum pratense, attacked by Hessian fly, 306. 

 Pine, Scythropus elegans on, 37, 



white, v.'eevil of, 468. 

 Pinus insignis, moth on, 117. 



strobus, Pissodes strobi on, 468. 



I Plantago major. Aphis on, 235. 

 Plantain, root-louse on, 235. 

 Plum, 238, 239. 



Aphides on, 405. 



curculio of, 219, 227, 254. 



gouger on, 227. 



hog, food-plant of Icerya, 408. 



Hyphantria defoliating trees, 338. 



injured by green beetle, 425. 



insecticides for, 364. 



occurrence of Phorodon on, 185. 



Paris green as protection to, in Kngland, 293. 



pear slug on. 163. 



Phorodon mahaleb on, 468, 469. 



plant louse on, 479. 



rose-chafer on, 271. 



varieties of, attacked by hop-louse, 486. 



varieties of, exempt from hop-louse, 486. 

 Polygonum persicarium. Aphis on, 231. 

 Pomegranate, damaged by India Vii-achola, 44. 

 Poplar, food-plant of INIelanoxanthus, 290. 



Mytilaspis pomorum on, 469. 

 Poppy, devoured by rose-chafer, 22. 

 Populus monilifera, supposed bed-bugs under 

 bark, 21. 



food-plant of Melanoxanthus, 290. 



tremuloides, Bryobia eggs on liark, 49. 

 Potato, attacked by stalk-weevil, 2.59. 



Australian lady-bird on, 434. 



blister beetles on, 416. 



flea beetles on, in Australia, 434. 



moth of, in Australia, 435. 

 Prickly ash, Papilio oxynius feeding on, 32. 

 Primro.se, yellow, injured by sparrows, 393. 

 Primula vulgaris, damaged by sparrows, 394. 

 Prune, food-plant of Lecanium pruinosum, 384. 



Italian, exempt from hop-louse, 486. 



Thricolepis inornata on, 468. 

 Prunus, Clisiocampa disstrla on, 47S. 



lauro-cerasus, food-plant of Lecanium, 381. 

 Puccinia coronata and graniinis not the cause 



of "rust" on oats, 301. 

 Pumpkin, injured by Australian lady-bird, 434. 

 Purslane, Aphis on, 235. 



Pyrethrum, iu Australia and South Africa, 79. 

 Pyrus, eaten by Mamestra, 63. 



Q. 



Quercus, Clisiocampa disstria on, 478. 

 Quince, rose-chi.fer on, 221. 

 slug on, 171. 



R. 



Ragweed, food-plant of Aphis, 235. 

 Ramie, .said to support silk-worm, 301. 

 Ramularia tulasuei, fungus on strawVierry, 364. 

 Raspberry, Agrilus ruficollis on, 435. 



enemies of, 366. 



injured by Agrotis fenniea, 248. 



insects injuring, in Cornell bulletin, 308. 



rose-chafer on, 221. 

 Rhubarb, curculio of, 254. 

 Rosa, Clisiocampa disstria on, 478. 

 Rose, attacked by Icerya in Honolulu, 3.30. 



Cac(jeoia injuring, 19. 



Cecidomyiid on, 294. 



chafer of, 220, 221, 271, 272. 



