348 
Correspondence of communities, 313-15. 
Cowbird, 274, 275, 290. 
Coyote, 15, 167, 286. 
Crane-fly: larvae, 190; adults, 19r. 
Crappie, 115, 120, 126, 140. 
Crayfish: 69, 70, 199} 
drought, 9o. 
Crayfish, scientific names: 
—Cambarus: 
blandingi acutus, 114, 116, 154. 
diogenes, 114, 121, 199, 204, 206. 
gracilis, 296. 
immunis, 144, 154. 
propinquus, 85, 90, 104, 114, 116, 
118, 121, 123. 
virilis, 85, 90, 105, 114, 116, 121, 
R2O serine 
Creeks, sluggish, 102. 
Cricket, striped shrub, 266. 
Crickets, 167. 
Crossbill, 229. 
Crow, 242. 
Crustaceans or Crustacea: 67; as food, 
20; pelagic, 76; deep-water, 80. See 
Entomostraca, Crayfish, Sowbugs, Am- 
phipods, Shrimps, and Mysis. 
Current: water, 43, 61, 73, 86: 
stones, 61; intermittent, 90; 
94-99; reactions to, 29, 34, QI. 
Cutworms, hibernating, 201. 
behavior in 
about 
swift, 
Dace: black-nosed, 91, 92, 106, 111, 115; 
horned, 90, 91, 106, III, II5, 119, 120} 
red-bellied, 91, 111, I15, I19. 
Damsel-flies, scientific names: 
Argia, 121: 
putrida, 116. 
—Calopteryx maculata, 99, 105, 116, 118. 
—Enallagma, 117, 135, 155, 185. 
—Ischnura verticalis, 104, 123, 132, 135, 
mobs 
—Lestes, 155. 
Damsel-fly nymphs, 99, 104, 105. 116, 
117, 118, T21, 123, 130, 132, 135, 155, 
185. 
Darter: 34, 97; banded, 95, 97, 1109, 
120; black-sided, 95, 97, 120; Johnny, 
84, 91, 95, 105, I15, 119, 120, 126, 135; 
least, 84, 119; rainbow, 95, 97, I19, 
120. 
Day and night, responses associated 
with, 30. 
Deep-water communities of Lake Michi- 
gan, 8o. 
Deer, 14, 201, 238, 245, 260. 
ANIMAL COMMUNITIES 
Desmids, 76. 
Diatoms, 76. 
Dickcissel, 167, 283, 280. 
Digger-wasps, habits of, 222, 231. 
Dip-nets, illegal, 57. 
Disagreement of communities, 307-8. 
Dissolved foods of aquatic animals, 58. 
Diurnal depth migration of Entomostraca 
and rotifers, 77. 
Dogfish, 156. 
Dormancy: of eggs, 177-80; of winter 
bodies, 129. 
Dragon-flies, adult, food habits, 227. 
Dragon-flies, scientific names: 
—Aeschna, 118: 
constricta, 90, II4. 
—Aeschnidae, 104, 117. 
—Anax, 142: 
junius, 132, 135, 155. 
—Basiaeschna janata, 121. 
—Celithemis eponina, 155. 
—Cordulegaster obliquus, 90, 114. 
—Epiaeschna heros, 155. 
—Gomphus: 
exilis, 99, 116, 121. 
spicatus, 143, 155. 
—Leucorhinia, 142: 
intacta, 146, 147, 155. 
—Libellula pulchella, 155. 
—Libellulidae, 104. 
—Macromia taeniolata, 103, 123. 
—Pachydiplax longipennis, 155. 
—Plathemis lydia, 116. 
—Tetragoneuria cynosura, 114, 135. 
—Tramea, 142: ‘ 
lacerata, 155. 
—Sympetrum, 155: 
rubicundulum, 155. 
Dragon-fly nymphs, 90, 93, 99, 103, 104, 
LO, LL7, LLS, L20, 1235 032. ensh aes 
143, 146, 147, 155. 
Drift, animal, 219. 
Droughts: 90; behavior of stream 
animals in, 92, 105; force animals 
downstream, 1006. : 
Duck, wood, 181, 190, 191. 
Dunes, moving, 229. 
/ 
Earthworms, 20, 190, 262, 269. 
Ecological agreement: of communities, 
305; of individuals, plants, and animals, 
304-8; of species, 315. 
Ecological equivalence, 34. 
Ecology: content of, 32, 
SENEVICy Liss eels lees 
299-318; 
308-15; 
