778 
Ctenodipterini, order of, 238 
Ctenothrissa, 274* 
Ctenothrissidx, 274 
Cuban fishes, 123 
cubero, 549 
cub-shark, 199* 
cuckold, 627* 
cultus cod, 651* 
cunner, 598 
cusk, 744 
cusk-eel, 730* 
cutlass-fishes, 482, 483* 
cutthroat-trout, 325 
Evermann on, 326 
Cycliz, 245 
Cyclopteride, 664 
Cyclopterus, 665* [202 
Cyclospondyli, suborder of, 
Cyclostomes, 167-178 
extinct, 168 
orders of, 168 
Cymatogaster, 32*, 586* 
Cynoglossine, 708 
Cynoscion, 567* 
Cyprinide, 382 
fossil, 393 
number of species, 384 
Cyprinodon, 415* 
Cypselurus, 43*, 431* 
dace, 382 
black-nosed, 383* 
species of, 385 
Dactyloscopide, 716 
daddy-sculpin, 656 
Dalatiide, family of, 203 
Daldorf, on tree-climber, 49 
Dallia, 423* 
Damalichthys, 588* 
damsel-fishes, 592, 593* 
indigo, 595* 
darters, 
black-sided, 525, 526* 
blue-breasted, 529* 
crystal, 528 
fantail, 530 
goby, 673* 
green-sided, 1or*, 527* 
johnny, 528 ; 
least, 530 
rainbow, 530 
relation to perch, 521 
sand, 528 
tessellated, 527 
Dasyatide, 212 
Dasyatis, roo, 213* 
Davis, on planting of salmon- 
fry, 309 
day-chub, head of, 386* 
dealfishes, 687, 688* 
Dean, 
on chimeras, 220 
on lateral line, 21 
Index 
Death Valley fish, 418* 
deep-sea angler, 751* 
Derepodichthyidx, 730 
Derichthys, 375* 
devil-ray, 216* 
diablo, 755 
diamond-fishes, 609 
Diaphus, 355* 
Dictyopygide, 252 
Diodon, 15*, 633* 
Diodontide, 633 
Diplesion, 101*, 527* 
Diplodus, 560* 
Diplomystus, 278* 
Dipnoans, classification of, 
238 
Discocephali, 670-690 
Gill on, 681 
Dismal Swamp fish, 419* 
dispersion, causes still 
operation, 127 
dissection of the fish, 24- 
31 
distribution, 
agency of ocean currents, 
in 
6 
barriers against, 97 
centers of, 97 
effect of temperature, 95 
equatorial zone, 104 
of fresh-water fishes, 103 
laws of, gt 
of littoral fishes, ror 
local barriers to, 107 
of marine fishes, 99 
northem zone of, 103 
southern zone of, 105 
doctor-fish, 618 
dogfish, 202* 
dogoro, 592 
dog-salmon, 295 
dog-snapper, 550 
dollar-fish, 498 
Dolly Varden 
336%, 337* 
dolphin, 502* 
Doncella, 106*, 607* 
dorado, 502* 
Doras, 
Giinther on, 402 
dormeur, 671* 
Dormitator, 672* 
Dorosoma, 297* 
Dorosomatidz, 279 
dorsal fin, of Holoptychius, 
229* 
Dorypterid, 251 
Dorypterus, 252 
Draciscus, 663* 
dragonets, 714 
drum, 572* 
trout, 136, 
eagle-ray, 215* 
Ebisu, 557* 
Echeneidide, 679 
Echinorhinide, 
204 
economic fisheries, 142 
eel-back flounder, 704* 
eel, common, 366* 
eel-fairs, 365 
eel, food of, 366 
larva of, 366, 367 
eel-like fishes, 362-377 
eel-pout, 728*, 729* 
eels, 362 
conger,’ 368, 369* 
duck-bill, 370 
long-necked, 372 
pug-nosed, 367 
snake, 369 
species of, 367 
family of, 
88s ; 
of bottle-nosed chimera, 
34* 
of fishes, 32, 34* 
of hagfish, 34* 
of Port Jackson shark, 35*, 
188* 
eighteeen-spined sculpin, 658* 
Elasmobranchii, 180-217 
Elasmobranchs, 
characters of, 181 
clas-ification of, 181 
subclasses of, 182 
Elassoma, 510* 
Elassomide, 511 
electric catfish, 58*, 4o2* 
electric eel, 58 
electric fishes, 58 
Electris, 671* 
elephant-fish, 222* 
Elopide, 269 
Elops, 269* 
Embiotocide, 587 
Emblemaria, 720* 
Embolichthys, 731* 
embryo, of Lepidosiren, 243* 
Emmydrichthys, 52*, 647* 
Empetrichthys, 418* 
Enchelycephali, suborder of, 
365 
Enchelyopus, 744* 
Engraulidide, 280 
Enophrys, 654* 
Entosphenus, 175* 
Ephippide, 61x 
Epinephelus, 18*, 538*, 539*, 
540* 543* 
equatorial 
fishes, to2 
zone of distribution, 104 
Ereunias, 661* 
Ericymba, 384* 
Erimyzon, 124, 391* 
Erismatopteride, 457 
