INDEX
395
Salmon, breecling habits, 42 ; colour
Spines Of shes, and natural selec—
o_f muscle, 1”_”49 ;
tion,-«259; origin and uSes,
tion, 247.1”;ï migrations, 50 ;
88,
?
secondary sexual characters,
Spiral valve, 124
_291
1
'
-
Spleen, 144
:
”
Salvelmus, 245
_
'
‘
”_
Spoon-bill, 267
il"
.
.
Sand-ed, 29, 40, 259,273, 304 '
'
Standard deviation, 176 _,
'
'
Sander, 246
{
…
‘
Star-gazers, 8 ”
__
»
'
»
Saprolegnia, 300
»
*
Statocyst, 14, 98, 161
Scales, 15, 16, 228 _'
'
Stegophilus, 297
_
Scandæ, 39, 282
“
"
*
Stick—lebaoks, and light, 332 ;” disScatophagus, 91
”;
'"
tribution, 246 ; incubation
Sciænidæ, 277,361
'
period, 66
Scombroids, 48, 81, 89,126, 136,
353; vanity, 362, 364
.
_
‘
237
_—
.
Sting—rays, 257
_
Scopelids, 22, 30, 154
Stomach 0£ shes, 121
Scyllium, 44, 169
"
Str”0mateids;iz38 ’ -'
_
Ÿ"
;
Sea sheries, 319
—.
'
”
'
Stromateoides, 198
'
’
'
‘
'
Sea—scorpion, 273
.
_
”Struggle for existence, 305
'
Sea—snail,'29
-
'
”'
.
Stur—geOn, 68, 89,133”, 230
_
'
Sebastes, 289
-
'
Stylophorus,1065
Secondary sexual characters, 145,
Stylophthalmu3, "163
—
,
ï…
290
'
Sucking discs, prQbableorigin,
=_{'
Segmentation of egg, 67
Sim—sh, 64, 118, 167
'
*‘î
"::_…_ï
'
of vertebral Column,
”Surface-shes,ï3r
”
]
.
'
‘
Selection of food and grounds‘,34,
Survival of the
7,
-
282, 337, 338 ’
’:f
"
Symbiosis,_.295
ËL—»”
”—
Sense buds, 152, 1159
«”
'.
î
zî
iL : :; SYügnâthûss Iir{î_97l
'
,
Separationbf'iEuropefïemAmerica
; ”: r.
: =
,
,
Serranoids,
}
'
_'
TA1E, adaÿtati0”ns, 253 ; form and
Sex determination, 284
_
air—bladder,
formation,
-
Sexual Organs and hormones,
‘_
,
84
_
_
'
selection, 291, 359
'
'
…
_
"
Tarpon scales,
'
Shads, 50, 65
Teeth, 120, 265 ‘.
”
.
.
'
Sharks 'and Rays, &
Teleosts;
74,77, 94, lez,
124, 142, 215
"
=:"
—
105,
170, 207,
_
Sharks, recent origin, 235
264
"
'
'
Shooter, 3 50
_
_
Telesc0prc eyes, 163“
_
_
_,
“
Sildbjerg,” 27
'
Temperature, in blood
and muscles, ‘
Siluroids, 16, 243, 277, 278, 352, 361 '
22, 148 ; muence on eggs,
Silurus, 21
f
'
33 ;
.
en
development, 66 ;
Simis venosus, 128
'
011 number Of vertebræ, 192
'
Size of shes, 20
Tetrodon,269
_
'
'
Skate, 150
Thresher Shark, 253
'
Skin of shes,” 13
Thym}ls
and thyr01d glands, 144
'
Skull of shes, 100, 215
Thvrs_1‘ces, 255
_
_
'
Sleep in shes, 40
T rlap1a, 365
Sliding of continents, 220
T11e—sh, 299
.
_
Smallest sheé‘, 20
'
Toad—shes, 29, 257
Smelt, 30, 50
"
41, 349
_
_
Sole, metamorphosis, 118
1
_
Trac;hrnus,
257
.
SOund-making, 361
'
-
76, 106, 163
-
Sparoids, 94
_
of shes, 107
-
Spav”v‘ninghabits; 43 ;_
"
”96, 255
6
_
_
,
'
'
“
‘—4
Tr10h0gaster, 271: 35
'