50 



Page. 

 Dryocoetes n. sp. (Small red spruce bark- 

 beetle) . 25 



n. sp. (American spruce bark- 

 beetle) 25 



n. sp. (Birch bark-beetle) 25 



Dryophilus sp. (Giant arbor vita} Dryo- 



philus) 23 



Dynastes tityus 32 



Eburia quadrigeminata 38 



Edema. (See Symmerista.) 



Elapbidion villosum 34 



Elateridx 42 



Epargyreus tityrus 28 



Ergates spiculatus 21, 35 



Euclea delphinii 31 



indetermina 31 



Eudamus. (See Epargyreus.) 



Eudocimus mannerheimii 34, 46 



Euproctis chrysorrhcea 30 



Eupsalis minuta ' 39 



Euscliausia argentata - 29 



Euvanessa antiopa 27 



Galerucella luteola 32 



Gaurotes cyanipennis 36 



Gnathotrichus materiarius 15 



sulcatus 15 



n. sp. (Western pine wood- 



stainer) 15 



Goes pulcbra 36 



tigrina 36 



Grapbisurus. (See Ceratographis. ) 



Grapholitha caryana 33 



Grapta. (See Polygonia.) 

 Halisidota. (See also Euscliausia.) 



caryse 29 



maculata 29 



tessellaris 29 



Hemerocampa leucostigma 30 



vetusta 30 



Hemileuca maia 29 



Hetcemis cineria 36 



Homoptera lunata 29 



Hylesinus aculeatus 20 



aspericollis 20 



granulatus 19 



nebulosus 20 



sericeus '. 20 



n. sp. (Fir wood engraver) 19 



n. sp. (Grand fir bark-beetle) 20 



n. sp. (Western hemlock bark- 

 beetle) 20 



Hylobius pales 34 



Hyloicus kalmise 28 



Hylotrupes amethystinus 21 



ligneus 27, 38 



Hylurgops rugipennis 19 



subcostulatus 19 



Hyparpax aurora 30 



Hyphantria textor 29 



Ichthyura. (See Melalopha.) 



Lagoa crispata 31 



Lapara conif erarum 28 



Lecanium sp. (Hickory soft scale) 33 



Lepidoptera (foliage insects) 27, 33 



Leptostylus aculiferus 36 



Leptura canadensis 37 



Page. 



Limenitis bredowii 27 



Lina. (SeeMelasoma.) 



Lophyrus abbotti 32 



Lyctus sp. (Powder-post beetles) 39 



Lymexylon sericeum 40 



Malacosoma americana 31 



calif ornica 31 



constricta 30 



disstria 30 



f ragilis 31 



pluvialis 31 



Mallodon dasystomus 37 



melanopus 37 



Melalopha inclusa 29 



Melanophila drummondi 22, 38 



f ulvoguttata 38 



Melasoma lapponica 32 



scripta 32 



Microcentrum laurifolium 32 



Monarthrum. (See Pterocyclon.) 



Monocesta coryli 32 



Monohammus confusor 34 



scutellatus 21, 35 



Nadata gibbosa 30 



Nematus erichsonii 32 



Neoclytus capraea 36 



Neoclytus erythrocephalus 37 



Neophasia menapia 28 



Notolophus antiqua 30 



(Erne rigida 37, 43, 46 



Olene achatina 30 



Oncideres cingulata 34 



Orgyia. (See Notolophus and Hemero- 

 campa.) 



Ormyrus sp. ( Oak twig Ormyrus) 22 



Orthosoma brunneum 37 



Pachylobius picivorus 34 



Pachysphinx occidentalis 28 



Paleacrita vernata 31 



Parasitic Hymenoptera 41 



Paururus cyaneus 40 



hopkinsi 40 



pinicola 40 



Phlceosinus cupressse 41, 45 



dentatus 25 



punctatus 18 



sequoise 18, 45 



11. sp. ( Bald cypress bark-beetle) 42, 46 



Phryganidia californica 29 



Phymatodes variabilis 37 



Physocnemum andrese 36, 46 



Pinipestis. (See Dioryctria.) 



Pissodes dubius 34 



strobi 34 



sp. (Western spruce weevil) 34 



sp. (Sugar pine bark-weevil ) 22 



Pityogenes carinulatus 17, 44 



n. sp. (Mountain pine wood-en- 

 engraver) 17 



n. sp. (White pine wood-en- 

 graver) 25 



Pityophthorus cariniceps 24 



confinis 16 



minutissimus 24 



nitidulus 17 



pubipennis 16 



