INDEX, 



555 



in Russia, 168, 210, 331, 459, 494 ; 

 bionomics of, in U.S.A., 124, 188, 

 251, 267. 



Aphis brevis, on apples in America, 

 398. 



Aphis calotropidis , sp. n., on Calo- 

 tropis procera in Italian Somali- 

 land, 160. 



Aphis cardui, attacked by Aphido- 

 letes meridionalis in U.S.A., 477. 



Aphis cerasi, on fruit-trees in Nor- 

 way, 502 ; fumigating orchards 

 with tobacco smoke against, in 

 Russia, 332. 



Aphis cerealis (see Macrosiphum). 



Aphis citri, on lemons in Xyasaland, 

 9. 



Aphis craccivora, on lentils in 

 Russia, 459. 



Aphis crataegi, Kalt., food-plants 

 of, in Britain, 398 ; bionomics 

 and control of, in Russia, 23, 165, 

 166, 330. 



Aphis crataegi, Buckt., food -plants 

 of, in Russia, 459. 



Aphis euonymi (see A. ruviicis). 



Aphis foveolata, sp. n., on Pergu- 

 laria extensa in Italian Somali- 

 land, 160. 



Aphis gossypiella, attacked by 

 Aphidoletes meridionalis in U.S.A., 

 478. 



Aphis gossypii, Glov. (Cotton Aphis, 

 Melon Aphis), on cotton in 

 Nyasaland, 8 ; food-plants of, in 

 Russia and Turkestan, 19, 210, 

 215, 216, 331, 494; bionomics 

 and control of. on melons, etc., 

 in U.S.A., 252, 267, 317-319, 343, 

 386, 409 ; on cotton in the West 

 Indies, 43. 



Aphis gossypii, Wass. (see 

 A. crataegi, Buckt.). 



Aphis grossulariae, on gooseberries 

 in Russia, 330, 333. 



Aphis helianthi, attacked by Aphi- 

 doletes tneridionalis in U.S.A., 

 478. 



Aphis idaei, tobacco extract against, 

 in Russia, 330. 



Aphis kochi (pyri), synonymy and 

 distribution of, 397 ; in orchards 

 in Russia, 210, 331. 



Aphis leontodonicllo, sp. n., in nest 

 of Lasius flavus in England, 28. 



Aphis maidi-radicis, on asters in 

 Canada, 118. 



Aphis maidis, attacked by Aphido- 

 letes meridionalis in U.S.A., 478 ; 

 distribution of, dependent on 

 that of Paniciim crus-galli, 374. 



Aphis mali (see A. pomi). 



Aphis malifoliae (see A. sorbi). 



Aphis medicoginis, on apples in 

 America, 398. 



Aphis napelli, on aconite in Russia, 

 167. 



Aphis nigra, on apple and haw- 

 thorn in Britain, 398. 



Aphis obnoxia, sp. n., on barley 

 and sorghum in Russia, 459. 



Aphis oxyacanthae (see A. nigra). 



Aphis padi, in Norway, 504. 



Aphis paoli, sp. n., on Calotropis 

 procera in Italian Somaliland, 

 160. 



Aphis papaveris (see A. rumicis). 



Aphis persicae, Chilocorus quatuor- 

 pustidatus predaceous on, in Ar- 

 gentina, 314; food-plants of, in 

 Russia, 459. 



Aphis persicae-niger (Black Peach 

 Aphis), sprays used against, in 

 S. Australia, 529 ; Chrysopa 

 californica predaceous on, in 

 U.S.A., 409. 



Aphis pheidolei, sp. n., in nest of 

 Pheidole in Rhodesia, 123. 



Aphis plantaginis, food-plants of, 

 in Britain, 417; associated with 

 ants in Europe, 123, 171. 



Aphis pomi {mali), on apples in 

 Norway, 502 ; bionomics and 

 control of, in orchards in Russia, 

 21, 56, 163, 210, 328, 330, 331, 

 332, 333, 415, 459, 494; biono- 

 mics and control of, in orchards 

 in Canada and U.S.A., 14, 118, 

 131, 187, 232, 245, 266, 274, 337, 

 338, 340, 367, 484, 517; distri- 

 bution of, 397. 



Aphis pomonella, sp. n., on apples 

 in E. Africa, 398. 



Aphis pruni (Plum Aphis), biono- 

 mics and control of, in Britain, 

 532 ; on fruit trees in Norway, 

 502 ; quassia decoction against, 

 in Russia, 215; in orchards in 

 U.S.A., 266. 



Aphis prunifoliae (see A. avenae). 



Aphis prunina, on plums in Russia, 

 459. 



Aphis pseiidobrassicae, sp. n., biono- 

 mics and control of, in U.S.A., 

 187, 440. 



Aphis pyri (see A. kochi). 



Aphis ribis, on currants in Russia, 

 21, 333. 



Aphis rumieis. food-plants of, in 

 Britain, 397 ; bionomics and 

 control of, in Russia, 164, 166, 

 330, 331, 459, 494; bionomics 

 of, on beet, etc., in U.S.A.. 124, 

 246. 



Aphis sacchari, on sugar-cane in 

 Queensland, 345. 



Aphis salicis, soap solution against, 

 on willows in France, 424. 



Aphis setariae, natiual enemies of, 

 in U.S.A., 408, 478. 



