53 



rape. 



lior.Ts, llat-lu'iKiod SS 



rouiiil-lu'U(le<l Sf) 



Brviithis, northiTii 39 



Hron/i' birch bon-r •Jl,;^ 



Bn>\vn-tiiiled motli 30 



Buck moth 2lt 



HnlMippcd buttcrlly 27 



Biiprcstis, i^oliU'ii 39 



Biiltcrtlics ami niotlis 27 



Califoriiiii tussock iiiolb 30 



C'uliforiiiaii rhrynaiiidiii 29 



tciit-catcrpillar 31 



Callidiiim, chestnut 3Ci 



Canadian IvOplunv 37 



Canker worm, sprinp 31 



Cntalpa Sphinx 2.S 



Cedar bark-beetle 2'> 



western is 



l)<)rer, western 21 



borer :iS 



tree borer 27 



Cherry-leaf webworm : 31 



Chestnnt-borer, two-lined SS 



callidium ;!•; 



timber-worm 40 



Chion, belted 36 



Cicada, seventeen-year 33 



smal 1 western 23 



Clerid, clouded 2C> 



dubius 42 



hairy 42 



orange banded 42 



spider-like 42 



Clerids 42 



Click-beetles 42 



Clytus, red-headed .* 37 



Colorado Dendroctonus 44 



Colydiids 43 



Companion bark-beetle 41 



Cone-worm, spruce 33 



.southern pine 33 



Cosmopolitiin timber-beetle It; 



Cottonwood mot-borer 37 



Crinkly flannel moth 31 



Cryi)halus balsjim fir 24 



hairy 16 



spruce 24 



Cypress, bald, bark-beetle 42, 46 



iMjrer, curious 36 



rigid 37, 46 



white-lined 36, 46 



I^wson, bark-beetle 45 



sapwoml bf)rer 39, 46 



weevil 34,46 



Dftgger-nioth, American 29 



smeared 29 



Dark red turpentine beetle 19 



Dark tussock-moth 30 



Dendroctonus, Arizona 42, 44 



Colomdo 4-t 



Douglas spruce 19,44 



moinitain pine 19,42,44 



Densely punctured bark-bi-elle 16 



Destroyer, fir-tree 21 



western pine 1m 



Page. 



Destroyers, bark-beetle •_'6, 42 



Destroying beetle of the Black Hills, pi 11.43,44 



spruce 26 



Destructive pine bark-beetle 41 



spruce wood-borer 27, 37 



Dol urgus, .<i t ka spruci- 18 



Dryophilus, giant arborvit:e 23 



Dubius clerid 42 



Elater, eyed 42 



small-eyed 42 



Kliii leaf-beefle, importi-d 32 



larger 32 



Eyed elater 42 



I'^ill web- worm 29 



Fir, balsam, bark-beetle 25 



Cryi>lialus 24 



bark-beetle, smaller 17 



western 17 



branch scolytus 20 



C^alifornia white, Scolytus 21 



grand, bark-beetle 20 



tree <lestroyer 21 



Scolytus, smaller 20 



weevil 31 



wood-engraver 19 



Fi ve-spined Tomicus, western IS 



Flat-headed borers as, 39 



Foliage insects 32 



Forest span-worm, large .■ 31 



tent caterpillar 30 



Four-horned Sphinx 28 



Fo\ir-spine<l Tomicus 18 



Fruit and seed insects 



Fungus following bark-beetle attack 



(Jail insects 22,23 



louse, Englemann spruce 2:? 



Sitka spruce 2:? 



tiirdler, hickory twig 34 



poplar 35 



Golden Buprcatis 39 



Goldsmith beetle 32 



fireen trogositid 43 



( ; y psy moth 30 



llackberry butterfly, common 28 



Hairy clerid 42 



Cryphalus 16 



Hemlock bark-beetle, western 20 



bark-borer, easteni .38 



bark-lKirer, western 3S 



wood-sluiner, western 15 



Hickory bark-beetle 41 



borer, beautiful 36 



common 36 



flat-headed 38 



paintc<I 36 



tiger 36 



caterpillar, black 30 



striiKHl 30 



horned devil 28 



husk-wonn 33 



soft-scalo 3:1 



timlHjr-beetlc 39 



tuss<H?k caterpillar 29 



twig-girdler 34 



Itonitail, baudcd 40 



