GENERAL INDEX. 
475 
Rage 
beetles, pupal chambers, construction of 234,235 
pupation, method Of. - 233,234 
rearing specimens, method of 234 
removal from fishponds 261, 262 
scarcity in large bodies of water 233 
scavenger..-' 9-38,232 
snout 248 
structural adaptations of... 238 
for flotation 241 
for locomotion 238 
for respiration 239 
for sex functions _• 242 
for sight. 242 
study, methods of 233, 234 
tiger 248 
whirligig 232 
Belostomidffi 252 
Berosus 233, 236, 243, 249, 265, 309, 332 
pantherinus 263, 307, 311, 312, 313 
adult, description of 312 
distribution in Fairport (Iowa) fishponds 263 
egg cases. 311 
larva, description and habits of 311 
pupa, description of 312 
perigrinus 238,263,312 
adult, description of 312 
distribution in Fairport (Iowa) fishponds 263 
egg case 312 
larva, description of__ 312 
migration 238 
pupa, description of 312 
striatus 237, 238, 263, 307, 309-313 
adult, description and habits of 311 
distribution in Fairport (Iowa) fishponds 263 
egg cases.— 309 
larva, description and habits of 310 
newly hatched 310 
migration 237 
pupa, description and pupation of ' 310 
Bidessus 265 
flavicollis. 263 
fuscatus - 263 
lacustris 238, 263 
distribution, according to size 238 
in Fairport fishponds 263 
big drum - - 196 
biguttulus, Ilybius. - 263 
bijuga, Scenedesmus 461 
Biocoenose.. 411 
Biological and chemical studies, Northwestern lakes of 
the United States, with reference to possibilities in 
production of fish 51-140 
birds, as beetle eaters 247 
biseriata, Surirella 402 
black bass: 
largemouth 1, 7, 32, 254, 255, 258 
smallmouth 249, 250, 253 
black bullhead 254 
black crappie 254, 255 
black drum 196,197 
black horsefly.. 246 
black sucker • 2 
black-tail 150,164 
black tern 34 
black trout 164-169 
bluegill 6, 32, 253, 254, 255, 258, 259 
blue-green algse 402, 406, 409, 410, 411 
blue perch 6 
Page 
blue-spotted sunflsh 6 
blue-winged teal 248 
Blystad, Chester N.: Significance of larval mantle of 
a fresh-water mussels during parasitism, with notes on a 
new mantle condition exhibited by Lampsilis luteola. 203-219 
Boleichthys fusiformis ...; 8 
bollmani, Opsopoedus 3 
bombardier beetle 246 
Boorman, W. R., George Kemmerer, and J. F. Bovard: 
Northwestern lakes of the United States: Biological 
and chemical studies with reference to possibilities in 
production of fish 51-140 
borax carmine 462 
borealis, Haliplus 263,264 
Lampsilis 444 
borer, wood 221-230 
Bosmina ___ 417,418 
lingirostris 400,405,410 
Bouin’s fixative •. 457 
Bovard, J. F., George Kemmerer, and W. R. Boorman: 
Northwestern lakes of the United States: Biological 
and chemical studies with reference to possibilities in 
production of fish 51-140 
bowfin 1,4 
brachiata, Moina 400,403,409,410 
Brachinus janthinipennis 246 
Brachionus 409,411 
angularis 400,403-406,409,410 
angularis caudatus 400,403,405,409,410 
bakeri v. brevispinus 400 
v. eluniorbicularis 400,404,405 
v: entzii 400 
budapestinensis 400* 
pala 400,403,409,410 
pala f. amphiceros 400,401,403,404,405,409 
pala v. dorcas 400,409,410 
v. dorcas f. spinosus 400,405,409,410 
urceolaris 400 
brachionus, Notops 410 
brachionus spinosus, Notops 400 
brama, Abramis 417 
brasiliensis, Pinaeus. 163 
Scenedesmus 461 
bream — 2,6,253 
Breder, C. M., jr., and William W. Welsh: Contribu- 
tions to life histories of Sciasnidse of the esatern United 
brevispinum, Staurastrum 461 
Brevoortia tyrannus 162, 163 
brightwelli, Asplanchia 406 
brilla, Monostyla 400 
brook silverside... 5 
brook trout 254, 256 
broussonnetii, Umbrina... 198 
brown cat 2 
brownii, Stolephorus 163 
bubalis, Ictiobus 253,258 
budapestinensis, Brachionus 400 
buff alofish ..... 21 , 29, 250, 252, 41 9 
eaten by beetles 250,252 
mongrel 253 
redmouth- 253 
smallmouth. 253.258.259 
bullfrogs - 32,248 
bullffead 2,170,171,175 
black 254 
common 253,254 
marbled 263 
