INDEX. 



683 



dustino powder, 264, 287, 312, 

 323, 371, 381, 385, 408, 527, 528, 

 530, 547 ; t'oriimlae for, in sprav.s, 

 2, 14, 70, 71, 158, 177, 345, 385, 

 508 ; preparation of forms of, 

 341 ; against coconut pests, 419, 

 429 ; against fruit-flies, 126 ; 

 against insects on forest trees, 25, 

 157, 174, 218, 308, 435; against 

 Laphygma frugiperda, 168, 175 ; 

 against locusts and grasshoppers, 

 78, 192 ; against orchard pests, 

 6, 14, 42, 70, 71, 106, 119, 121, 

 123, 142, 158, 177, 185, 186, 190, 

 234, 237, 250, 264, 287, 292, 295, 

 349, 369, 370, 371, 381, 383, 408, 

 441, 445, 446, 461, 469, 483, 489, 

 491, 553, 556 ; against thrips, 

 203, 249 ; against termites, 124, 

 316; aoainst vegetable pests, 11, 

 35, 80, 107, 108, 119, 134, 141, 

 170, 257, 305, 306, 307, 311, 312, 

 337, 370, 371, 372, 381, 385, 397, 

 434, 460, 527, 528, 530 ; against 

 vine pests. 67, 83, 178, 195, 351, 

 353, 485, 486, 508 ; effect of, on 

 foliage, 69, 194, 345 ; effect of 

 on stone-fruits, 491 ; injurious 

 eftect of. on maples, 223 ; and 

 barium tetrasulphide, 345 ; and 

 Bordeaux mixture. 14, 134, 185, 

 186, 230, 250, 337, 364, 370, 371, 

 381, 383, 429, 485, 527; more 

 injurious than calcium arsenate 

 when mixed with lime-sulphur, 

 345 ; calcium arsenate as a 

 substitute for, 520 ; addition of, 

 to copper solution. 342 ; and 

 lime. 82, 381, 386; and lime- 

 sulphur. 14, 71, 177, 185, 186, 

 322, 369, 383 ; and miscible oil, 

 203 ; and Paris green, 371, 527 ; 

 scorcliing effect of, and sodium 

 sulphide on foliage, 345 ; adhe- 

 sives added to, 237 ; effect of 

 freezing on, 115 ; a better spray 

 for potatoes than Paris green, 

 460 ; customs duties on, 84 ; 

 restriction of the use of, as an 

 insecticide in France, 350 ; legis- 

 lation dealing with purity of 

 materials for, in Pennsylvania, 

 384 ; of doubtful use against 

 Anticarsia digitalis in West Indies 

 36 ; unsuitable against larvae 

 of Athatia flaeca, 325 ; ineffec- 

 tive against Pissodes siwbi, 

 114. 



Lead Chromate. experiments with, 

 against Lepidoptera, 25. 



Lead Hydrogen Arsenate, toxic 

 value of, 477. 



Lead Nitrate, addition of, to resin 

 solution against orchard pests, 

 237. 



Lead Svdphide, formed by com- 

 bining lead arsenate and lime- 

 sidphur, 345. 

 Lead, Red, against Gryllus assimilis, 



103. 

 Lead, White, in varnish against 

 Eriosoma lanigerum, 139 ; un- 

 suitable for use against Saperda 

 Candida, 208. 



Leaf-cutting Ants (see Atta). 



Leaf-footed Plant Bug (see Lepto- 

 glossiis zonatus). 



Leaf-hoppers, natural enemies of, 

 in Br. West Lidies, 10 ; Baccha 

 predaceous on, in California, 13 ; 

 relation of ants to, 400 ; (see 

 Empoasca and Typhlocyba). 



Leather, destroyed by Dennestes 

 cadaverinus in New York, 10. 



Lebeda nobilis, on Khasya pine in 

 India, 439. 



Lebia analis, predaceous on Laphy- 

 gma frugiperda in U.S.A., 380. 



Lebia gratidis, predaceous on Lepti- 

 notarsa decetnlineata in Ohio, 371. 



Lecaniascus polymorphMS, associated 

 with scale-insects on vines, 376. 



leeaniella, Blastobasis. 



lecanii, Coccophagus ; Epiteirasti- 

 chus. 



Lecaniobius coclcerelli, parasite of 

 Saissetia nigra in Br. Guiana, 503. 



Lecaniodiaspis tarsalis, sp. n., in 

 S. Africa, 501. 



Ljecanium, new parasites of, in the 

 Far East, 4, 11, 165, 456; on 

 tea in Transcaucasia, 395. 



Lecanium acaciae, sp. n., food- 

 plants of, in E. Africa, 456. 



Lecanium adersi, on mango in 

 Zanzibar, 456. 



Lecanium aequale, sp. n., on Avi- 

 cennia nitida in Br. Guiana, 456, 

 504 ; ants associated with, 504. 



Lecanium africanum (see Coccus). 



Lecanium berberidis (see Eule- 

 canium). 



Lecanium cajani, sp. n., on pigeon- 

 pea in Nigeria, 456. 



Lecanium corni (see Euleeanium). 



Lecanium coryli (see Euleeanium). 



Lecam,ium cymbiform,e (see Eule- 

 eanium persicae). 



Lecanium hemiftphaericum (see Sais- 

 setia). 



Lecanium hesperidum (see Coccus). 



Lecanium hirsutum, sp. n., in 

 E. Africa, 456. 



Lecanium juglandis (see Eule- 

 eanium). 



Lecanium mangiferae (see Coccus). 



Lecanium nigrum (see Saissetia). 



Lecanimn oleae (see Saissetia). 



Lecanium. perforatum (see Eucalym- 

 nct-tus). 



