314 A NATURALIST IN THE GREAT LAKES REGION 



Colcoptcra, Bee ties — Cc nt inued 



— Galerites janus, yellow-legs, ijj 



— Galetucella luteola, 223 



— Graphisuriis fasciatus, 225, 226 



— G>'n'w//5, whirligig beetles, 105, 186,187 



— Hydrophilidae, water- scavenger 



beetles, 186, 239 

 — Lacon rectangidaris, 161 

 — Liophus alpha, 226 

 — Meracintha contrada, darkling beetle, 



228 

 — Molorchns bimaculatus, 225, 226 

 — Monohammus scutdlatus, a long-horn 



beetle, 158, 159 

 — Nyctohates pennsylvanica, 228 

 — Oncideres cingulatus, hickory girdler, 



222 

 — Parandra hriinea, heartwood borer, 



227, 227 

 — Passalus cornutns, horned Passalus, 



219, 220, 227, 228 

 — Pisenus humeralis, fungus beetle, 



219, 220 

 — Pledrodera scalator, cottonwood borer, 



156 

 — Prasocuris phellandrus, 161 

 — Pscphenus lecontei, brook beetle, 287, 



289 

 — Saperda: 



lateralis, 226 



tridentata, elm borer, 224, 225 



vestile, 226 

 — Sphenophorus, snout beetles, 155 

 — Stenosphenius tenehri aides, 228 

 — Tetraopes tetraophthalmus, milkweed 



beetle, 230 

 — Tymnes: 



matasternalis, leaf beetle, 223 



tricolor, leaf beetle, 223 

 — Uloma impressa, darkling beetle, 228 

 — Xanthoma lo-notata, 223 

 — Xylopinus saperdioides, 227 

 — Xylotrechus colonus, rustic borer, 224, 



225 



Columbine, Aquilegia canadensis 



Compass plant, Silphium laciniatum 



Conefiower, Brauneria purpurea 



Conglomerate, 71 



Continents, 41 



Corals, 49, 50 



Corn plant association, 108 



Corn root aphis, 108 



Cotton-boll weevil, 301 



Cottonwood association, 115, 120, 122 



Cress, bitter, Cardamine 



Crickets, see Orthoptera 



Crustaceans: 



— Aero perils, 290 



— Asellus, the water sow bug, 93, 94 



— Cambarus: 



dio genes, 252 



gracilis, 252, 254 



virilis, crayfish, 234 

 — Canthocampus, 93, 290 

 — Cyclisticus convcxus, sow bug, 218 

 —Cyclops, 93, 94, 290 

 — Cypris marginata, 93, g4 

 — Daphnia, 93, 94, 290 

 — Eubranchi pus serratus, the fairy 



shrimp, gz, 93 

 — Eucrangonyx gracilis, bender or scud, 



178 

 — Gammarus fascial us, the bender, 93, 



177 

 — Hyaldla knickerbockcri, bender, 177 

 — Leplohora, 290 

 — Palaemonctcs paludosus, the shrimp, 



93, 240 

 — Porchdlio rathke, sow bug, 218 



Crystal, 68 



Culver's root, Veronica virginica 



Cup plant, Silphium perfoliatum 



Dalles of the Wisconsin, 6, 7 



Damsel fly, see Odonata 



Damsel-fly nymph, 105, 186 



Del wood Park, 10 



Deposition, 15; of river, 16 



Desplaines River, 3, 66, 80, 83 



Desplaines Bay, 80, 83 



Devonian period, S3, 38, 5°, 55, 58 



Diabase, 75 



Difflugia, 290 



Digger wasp association, 150, 154, 156, 

 163 



Diorite, 7s, 76 



Diptera, Flies: 



— Chironomus, a midge, 175, 287 



— Corethra, 290 



— Culex, mosquito, 104, 187 



— Exoprospa, bee fly, 154 



— Simidium, black fly, 186, 287 



Distribution of plants and animals, 

 factors determining, 90 



Dobson, larva of Corydalis cornuta, 186 



