352 Index 
Coregonus, 214. 
Coregonus clupeaformis, 159. 
Coregonus quadrilateralis, 162. 
Corethra, 201, 209, 242, 307. 
Corisa, 171, 205, 225, 231,°305. 
Corisa undulata, 304. 
Corixa, 183, 189,:190, 194. 
Corixa tumida, Ai. 
Corixide, 304. 
Cort, 242, 243. 
Coscinodiscus, 147. 
Cosmarium, 145. 
Cottus dispar, 204. 
Cottus ictalops, 204. 
Cotylaspis insignis, 239, 240, 241. 
Coues, 237. 
Crab, blue, 234. 
Cranberry Lake, 200, 203. 
Crappie, 108; 177, 222, 225. 
Craspedodiscus, 147. 
Crawfish, 46, 58, 59, 63, 83,.92, 95, 
102, 155, 158, 159, 171, 177-179, 
181-183, 185, 189-191, 193, 194, 
197, 199, 205, 206, 207, 209, 225, 
226, 228, 229, 234, 237, 238, 245, 
301, 310, 319, 323. 
Cristivomer namycush, 214. 
Crow, 235. 
Crowfoot dredge, 67, 87, 90, 312. 
Cryptobranchus allegheniensis, 
229 246. 
Crustacea, 46, 54, 58, 59, 63, 83, 
88, 89, 92, 93, 95, 99, 101; 102, 
104, 156-158, 163-166, 168-172, 
176-181,.183,.184, 186, 189, 199, 
192-194, 196-198, 203, 206, 209, 
210,225; 226, 229; 231,310, 316, 
321. es 
Culicids, 307. 
Cyanophycee, 145. ° 
Curtis, 219-221. 
Cyclas, 191, 198. 
“ Cyclops, 164-166, 168, 175, 177, 
"180, 188, 190, 194, 195, 198, 203. 
Cyclops ater, 299, 300. 
Cyclops serrulatus, 299, 300. 
Cyclops strenuus, 195, 196, 300. 
Cyclops viridis, 195, 300. 
Cyclops viridis pareus’ 161. 
Cyclopidee, 300. 
Cylindrocapsa, 147. 
Cymbella, 147. 
Cyperacee, 293. 
Cypridide, 194. 
Cyprinide, 189, 191, 214. 
Cyprinus carpio, 170, 214. 
Cypris, 164, 175. 
DACES ATT. 
Dace, horned, 203, 204, 206, 301. 
Dace, red-bellied, 207. 
Dahl, 119. 
Damsel-fly nymph, 59, 74, 88, 89, 
94, 101, 104, 192, 201, 202, 231, 
303, 304, 319. 
Danish Biological Station, 115. 
Darter, johnny, 222. 
Darter, manitou, 194, 212, 215, 
217, 269, 281, 299-303, 307. 
Darter, tessellated, 195, 1962122 
215, 217, 269, 300, 302. 
Daphnia, 160, 166, 174, 175, 177, 
180, 184, 190, 191, 194. 
Daphnia hyalina, 192, 299. 
Daphnidie, 209, 299. 
Davenport, 296. 
Davis, C. A:, 290, 292. 
Davison’s landing, 84, 86, 165, 176, 
196. 
Dawson, 149. 
Deer Point, 52, 55, 89. 
Decapoda, 194, 301. 
Decodon verticillatus, 34, 38, 40, 
42, 43, 44, 51, 53, 60, 61, 72, 76, 
84, 85, 86, 91, 96, 99, 101, 108, 
295. 
De Kay, 169,. 247, 253, 265. 
Delaware River, 285. 
Denning, 209. 
Desmids, 150, 152, 273, 
2835 206 o2ies22. 
Detritus, dust-fine, 
137, 143-145, 146; 152, 
313, 315, 316,’ 319-323. 
Detritus sampler, 118: 
Dianthera americana, 31, 34, 36, 
37, 38, 39, 40, 42; 43,47, 48, 49, 
53, 55, 56, 61, 62, 64, 66, 67, 68, 
69, °70;°72, 13> 74,01; 18) 19s 825 
277, 280, 
ILSLig also: 
LOW Wis 
ae 
