general index. 
477 
Page 
Page 
creosote, properties of 222 
top minnow 253 
complanata, TJnio (Symphynota) 443 
confervacea, Navicula - 399 
Conochilus unicornis.. .. 404 
solid hydrocarbons of 226 
toxicity, experimental method and criteria of ... 222 
Crescent Lake, Wash.: 
description 99 
fish.. _ 99 
consobrinus, Gyrinus 236 
Contributions to life histories of Scisenidae of the eastern 
plankton 99,126 
thermal changes and gas conditions of 68, 99, 116 
crispas, Potamogeton 360, 384, 408 
croaker 143 180 253 
400, 401, 403, 409, 410, 411, 414, 416, 418, 420, 422-438 
banded 170,171 
crocus. 180 
cromis, Pogonias 145 196 197 
in Lake Pepin 394 
crotenensis, Fragiliaria 399, 401, 404-408,410 
Crucigenia irregularis 461 
quadrata 461 
interrogatus 237,238,263,272,275,276,277,279 
Crustacea 31, 256, 259, 355, 387, 389-392, 394-396, 418 
crysoleucas, Notemigonus 3 
distribution in Fairport (Iowa) fishponds 263 
eggs. 275 
cubbyu. 197 
Curculionidae 248 
cya.rip.11ns, "Lepomis 32 253 257 
•nipra’tinn ' P 9?7 
Cyanophyceae 399,401,402 
pupa, description of .. 276 
pupation.. 276 
Coregonus shinsii 417 
Cybister. 235, 236, 239, 249, 251, 260, 262, 267 
as fish eaters 251 
fimbriolatus 244, 247, 263, 266, 277-281, 283 
adult, description and habits of.. 281 
turtles as enemies of 247 
Monostyla 400, 409 
cornutus, Notropis 253 
distribution in Fairport (Iowa) fishponds 263 
eggs 277 
coroides, Umbrina — 145, 198 
pnrfinn DifTlngia 399 401 404 
larva, description and habits of 278 
mites as enemies of 244 
pupa, description of 280 
Corvula sialis 145,198 
pupation 280 
Corydalis — 252 
cornuta... 252 
C, nsni rmriisens 4fiO 
locomotion of.. 235 
Cyclinus assimilis 302 
Cyclocephala 246 
Cyclops sp 387,405,410,417 
Cottage Lake, Wash.: 
description.. ... 98 
fish. 72,73 
plankton 40, 98, 125 
thermal changes and gas conditions of.. 70, 115 
Cow Lake, Wash.: 
fish 72 
plankton 98, 125 
thermal changes and gas conditions of. 70, 115 
crappie 5,253 
black 254,255 
white 5 
Crater Lake, Oreg.: 
description 105, 106 
fish.. 106 
fish food 75 
plankton, net 108, 125 
temperature 106-108 
thermal changes and gas conditions of.. 68,69, 106-108, 115 
crawfish . 34 
Creniphilus despectus 263 
digestus 263 
subcupreus . . 263 
crenulata, Melosira 399,401,402,404-406,408-410 
prpn^ntp 221— 230 
Cyclotella : 461 
menenghiniana 399,402,404,405,408,409 
Cymatopleura elliptica 408 
Cymbella caespitosa 408 
cistula 408 
Cymbiodyta.. 333 
Cynoscion nebulosus 164-166, 169 
description • 165, 166, 169 
food... 169 
habits 164,165 
migration 165 
range 164, 165 
spawning 165 
Cynoscion nothus 169, 170 
description 169, 170 
food 170 
habits — 170 
range 169 
spawning season 170 
Hynnseiryn regal is 142, 150, 151, 157-159, 199 
age at maturity 158 
eggs and development of..... 150 
embryology 151 
food - 159,199 
growth 157 
distillates, toxicities of, for Limnoria lignorum 221-230 
fractionates 223 
movements and seasonal distribution 158 
size and weight attained 158 
cyprinella, Ictiobus 21,250, 253 
coa wotor ovtroofc 993 
Cyprinus carpio — 3,254 
materials tested.. 222 
Cyrtogaster dineutes Ashmead— 246 
