490 
GENERAL INDEX. 
Page 
Scenedesmus arcuatus 461 
arcuatus platydisca 461 
bijuga 461 
brasiliensis— 461 
denticulatus 461 
dimorphus 461 
minutus. .....A'iL 399 
quadricauda 399, 401, 402, 404, 405, 461 
sp--.— 399 
schauinslandii, Trachelmonas 399,402,405 
Scbilbeodes gyrinus 253,254 
Schizocerca diversicornis 400 
Schizomycetes 411 
Sciaenidse of the eastern United States coast, Contribu- 
tions to life history of ....... 141-201 
description J__ 145 
diagnosis of family 148 
eggs 146 
family, diagnosis of 148 
food of.... 145,199 
genera, key to 148 
growth.. 146 
habits 145, 146 
key to 146-149 
methods used in study of growth 142 
range 145 
scale examinations 142 
species, key to 148 
study of growth, methods used in 142 
Scisenops ocellatus 145, 184-186 
description 184, 185 
growth :11MH 185 
migration... 184 
range 184 
size ■ .1... a 184 
spawning season 184 
scutelloides, Navicula 408 
sea drum.. 196 
sea mink 186,190 
sea mullet.. 186,190,195 
sea trout.. 150-169 
sebago, Salmo 255 
Selenastrum westii 461 
semisulcates, Acilius 237,263,299-302 
Semotilus atromaculatus 3,253 
setiferus, Pinaeus 163 
setigera, Dunhevidia 400,406 
setularia, Dinobryon 461 
Shackell, L. F.: Toxicities of coal-tar creosote, creosote 
distillates, and individual constituents for the marine 
wood borer Limnoria lignorum 221-230 
shad, gizzard 4,253 
mud . 4 
shad trout 150-164 
sheepshead ........ 253 
shine-eye -.1.1.-- 2 
shiner : 3 
common | 253 
golden 3,254,255 
silver-fin... 253 
silverside .iHMfe,'. L . i _ 253 
shinsii, Coregonus..±^p. 417 
shipworm i.A: 221, 222 
shoal-water ducks 247 
Shumagin Islands, salmon-tagging experiments at.. 40-42 
sialis, Corvula ... 145, 198 
sicculus, Labidesthes _________ • 5 
Page 
Sida J. . pfi L. — 418 
crystalline.. MR... 400, 405, 406, 410 
Significance of larval mantle of fresh-water mussels during 
parasitism, with notes on a new mantle condition ex- 
hibited by Lampsilis luteola.. flMpt&J 203-219 
silver-fin shiner 253 
silverfish, killed by beetles ..A.... s&sii 251 
Silver Lake, Wash.: 
carbon dioxide content 71 
description 95 
fish 72,73 
plankton 70,95,102,131 
thermal changes and gas conditions of 70, 119 
silver perch..... — l.>_. 171 
silverside, brook '• 7> 6 
silverside shiner ...L. 253 
silver squeteague 169, 170 
silver whiting 195 
Simocephalus vetulus ...l.'Sffi 406 
simplex duodenarium, Pediastrum. 461 
simplex, Pediastrum 388,401,402,404 
smallmouth black bass 253 
smallmouth bufialofish 253, 258, 259 
snails A&&4HMMHL . . . 20, 245 
as beetle eaters — kfCte 245 
pond 245 
snapping turtles 247 
snout beetles 248 
sockeye salmon. 39-50 
sorex, Epithemia 408 
southern pumpkin seed 253 
southern squeteague. — 164-169 
spsericum, Ccelastrum. 461 
Spanaway, Lake, Wash.: 
plankton 70,103,131 
thermal changes and gas conditions of 70, 119 
sparoides, Pomoxis 5,254,257 
Spartina glabra 446 
spathula, Polyodon.. — 253 
spawneater 1 _ 3 
speckled cat — 2 
speckled trout - - - 164r-169 
speckles .... ; 5 
spenceri, Pleurosigma 405,408 
spermatosphara, Volvox 300,402 
Spermatozoa... .-j:...— 442 
sphaericum, Coelastrum 461 
Sphaerium sp !S*6 <j1A_-'j446, 463, 464 
Spilocryptus incertus Cressqn 246 
spiralis, Melosira 399 
Vallisneria — 360,384,408 
Spirit Lake, Idaho: 
depth, temperature, and dissolved gases. 119 
description 1 |||e 95 
plankton A... 95, 131 
Spirogyra .. .... 244, 408, 456, 461 
sp.. . .... ...I— . 399 
spirogyra, Euglena ...ALL* 399, 401, 402, 405 
spiroides, Anabaena 399, 402, 404-406 
splendida, SurireUa.--. 402 
sponges .‘ktA-- - 360 
spongilla fragalis... — . 360 
spoonbill cat . -- W& ; . _ . a'a ia. . 253 
Sporozoa AWk. 409 
spot, Norfolk Aslsb. 177 
spot-tailed minnow ...... 253 ■ 
spotted bass..— i.LA— — 184 
catfish ..l-tii:—.: ... 2 
