a 437 



Baccha fascipennis, 186-. 

 Bag worm, 105^, i23"-28''. 

 Balm of Gilead, resistance to insect attack, 



47"- 

 insects injurious to: 



oyster scale, IJ.V'. 21 1-. 

 willow borer, mottled. loi^, 103'*. 

 Balsam, lart^e black carpenter ant injuring, 



cjo\ 

 Banded ash borer, 257", Jjcj'-So^'. 

 Banded hickory borer, 256', 26y^-68-\ 

 barbita, Alagdalis, sec Magdalis barbita. 

 Bark beetle, f. 



spruce, birds feeding on, 28'. 

 Bark borers, Cy. 1 1", 35'', 2^6*-^y'-'. 

 Basket worm, i23"-28". 

 Basswood, apple wood stainer injuring, 



290". 

 Bathythrix meteori, 140^. 



pimplae, 140^. 

 Battle of the weak, 241 '-52^ 

 Bee family, 10". 

 Beech, insects injurious to: 

 borers : 



apple wood stainer, 257", 289^. 

 brenthian, northern, 263*. 

 chestnut borer, two-lined, 281'*. 

 flat-headed borer, common, 87-. 

 leopard moth, 78'''. 

 pigeon tremex, 63". 

 red horned borer, small, 299^. 

 Xyloterus politus, 257", 292''. 

 leaf feeders : 



black walnut caterpillar, 305*. 

 forest tent caterpillar, 107^. 

 locust leaf miner, ^2^^. 

 scale insects : 



Putnam's scale, 227*. 

 Benzoin, black-banded scale injuring, 201^. 

 Betula papyrifera. Chionaspis lintneri injur- 

 ing, 227". 

 bidentata, Tomoxia, 261-. 



Lifidus, Telenomus, 145''. 

 bigeminatus, Hyperaspis, 198*. 

 bilineatus, Agrilus, 257^, 28o''-83^. 

 bipunctata, Adalia, 174", 195-, 206*. 

 Birch, insects injurious to : 

 borers : 



bronze Ijirch borer, 257*, 284*. 

 leopard moth, 78''. 

 Pityophthorus sf^.. 2^y'*, 296^. 

 red horned borer, 257". 



small. 298'''. 

 willo.v borer, mottled, 103*. 

 Xyloterus, 257". 

 politus, 292*. 

 gall insect : 



Hamamelistes spinosus, 246^-47^ 

 leaf feeders : 



bircii leaf skeletnnizer, 258''. 315*. 

 elm cater]iillar, spiny, i6i'*. 

 forest tent caterpillar, 107*, no*, 

 locust leaf miner, 327". 

 tussock moth, white marked, 136". 

 Birch, white, insects injurious to: 

 Putnam's scale, 227°. 

 Xyloterus sp., 293". 

 Birch, yellow, Xyloterus sp. injurmg, 294*, 



294«. 

 Birch leaf skeletonizer. 258'. 3 15'*- 17". 

 Birds, relative value of certain families, 

 29^-32" ; feeding on gipsy moths, 27^, 

 122^: feeding on forest tent caterpillars, 

 III-. Ill"; feeding on hairy caterpillars, 

 137^; how to increase number, 33^; insect 

 enemies, 25''-34^ ; probable results if in- 

 sect depredations were not checked by, 

 2,2'' : results of increasing efficiency of, 

 7,2^ ; value in keeping other pests under 

 control. Ill"; voracity, 25*-26". 

 bivittata. Xeoglaphyroptera, 140". 

 hivulnerus. Chilocorus, r86', igs''. 198", 



208', 216-''. 223', 231^. 

 Black-banded scale, 173', 200''-3". 



