566 
dabonawa, i, 430 
dace, i, 251; ii, 118, 162, 166, 
168 
Dactylagnus, ii, 506 
Dactyloscopide, ii, 506 
Dactyloscopus, it, 506 
daddy sculpin, ih 445 
Dalatias, i, 546 
Dalatiide, i, 548 
Daldorf, 
on capture of Anabas, i, 
163 
on climbing-fish, ii, 367 
Dale, ii, 539 
Dallia, i i, 51 
figure ‘of, i, 1493 li, 206 
Dalliide, i, 290; ii, 206 
Damailichthys, 
figure of, ii, 374 
damsel-fish, ii, 381 
figure of, ii, 382 
Dapediide, ii, 25 
Dapedium, 
figure of, ii, 25 
Dapedoglossus, i li, 56 
darters, 1, 209, 231, 300, 304; 
ii, 166, 306, 310-315 
darter goby, 
figure of, ii, 462 
Darwin, i, 408 
on noises of catfish, i, 168 
darumaokoge, ii, 436 
Dasyatide, 
family of, i, 555 
Dasyatis, 
figure of, i, 247, 556 
Dasyscopelus, i li, 133 
Davis, H. S., ii, gr, 84 
on chinook salmon, ii, 85 
Davis, J. W., i, 426 
on fossil teeth, i, 525 
Dawson, i, 427, 594 
Day, i, 416; li, 90, 92, 95 
on calling fishes, 1, 168 
on electric eel, i, 170 
on grayling, ii, 121 
on Labyrinthici, ii, 365 
on sole, ii, 496, 497 
day chub, 
head of, figured, ii, 167 
deal-fish, ii, 477, 480 
figure of, ii, 478 
Dean, i, 512, 591, 594, 595 
on Acanthodei, i, 517, 518 
on Arthrodira, i, 518, 588 
on Chimeras, i, 563 
on fin migration, i, 75 
on fossil forms, i, 422 
on lateral line, i, 23 
on lungfish, i, 618 
on Ostracophores, i, 571 
portrait of, i, 417 
on sharks, i, 511, 531 
Index 
Dean, 
on Teleosts, i, 135 
Deania, i, 546 
deathfish, i, 183 
Death Valley fish, 
figure of, ii, 199 
Decapterus, ii, 274 
decurrent flounder, 
figure of, i, 441 
deep-sea angler, 
figure of, ii, 548 
deep-sea Chimera, 
figure of, i, 449 
deep-sea fishes, i, 246, 247, 
408; ii, 129 
degenerate fishes, i, 210, 211, 
216, 218 
degeneration, 
of eye, i, 220 
in fishes, i, 54 
in lamprey, 1, 37 
of structure, i, 216 
in tunicates, i, 480 
Delaroche, i, 95 
Dekay, i, 418 
Delfin, 
on hagfishes, i, 489 
Deltistes, ii, 172 
Deltodus, i, 531 
Dendrodus, i, 603 
dentary, i, 606 
Dentex, i, 945 ii, 338, 340 
Dercetes, il, 136 
Dercetida, ii, 136, 137, 158 
Derepodichthyide, ii, 520 
Derichthyide, ii, 155 
Derichthys, ii, 153 
figure of, ii, 156 
Dermopteri, i, 486 
Desmarest, i, 396 
development, i, 217 
of bony fishes, i, 135 
Dean on, i, 135 
embryonic, i, 133 
of flounders, i, 144 
heredity in, i, 134 
of horsehead-fish, i, 148 
of paired fins, i, 66 
devil ray, 
figure of, i, 559 
De Vis, i, 416 
Devonian, 
fishes, i, 436 
lamprey, i, 563 
sharks from, i, 65 
Diabasis, i, 375 
diablo, ii, 552 
Dialarchus, ii, 448 
Dialommus, i, 117 
diamond, 
fishes, ii, 398 
flounder, li, 493 
snapper, li, 337 
Diaphus, ii, 133 
_ figure of, ii, 132 
Dibothrium, i, 345 
figure of, ii, 103 
Dibranchus, i, 207; ii, 552 
Dicentrodus, 1, 522 
Dicentrarchus, i, 324; li, 321, 
330 
dichotomous rays, i, 596 
Dicranodus, i, 521 
Dictyorhabdide, i, 565 
Dictyorhabdus, i, 435; 565,578 
Dictyopyge, ii, 16 
Dictyopygide, i ii, 14 
Dictyosoma, il, 512 
Didemnida, i, 477 
Didymaspis, i : 576 
Didymodus, i, 521, 525 
Dinematichthys, ii, 524 
Dinichthyide, i i, 587 
Dinichthys, i, 587, 589 
figure of, i, 445, 584, 
jaws of figured, 1, 583 
Diodon, i, 273, 393, 394 
figure of, 1,17; li, 422 
Diodontide, 
family of, ii, 422 
dicecious fishes, i, 124 
diphycercal tail, i, 49, 81, 83, 
84, 507, 513, 516, 598 
Boulenger on, i, 84 
Dollo on, i, 84 
Diplacanthide, 1, 517, 518 
Diplacanthus, 
figure of, i, 517 
Diplectrum, ii, 329 
Diplesion, 
figure of, i, 247; ii, 312 
Diplodus, ii, 347 
figure of, ii, 346 
Diplognathus, i, 584, 589 
Diplomystes, ii, 178 
Diplomystide, li, 178 
Diplomystus, 
figure of, i, 205, 453, ii, 52 
Diploneumoni, i, 612, 619 
Diploprion, ii, 327 
Diplopterus, i, 82, 604 
Diplospondyli, i, 509, 523 
Diplurus, i, 605 
Dipneusti, i, 405, 462, 582, 
599, 601, 605, 607, 622, 
624; ii, 4 
relationship of, i, 609, 610 
subclass of, i, 609-622 
ane i, 436, he 
582, 583; il, 3, 8 
air-bladder i in, i, Ior 
classification of, i, 612 
ear sac in, i, 120 
figure of, i, 449 
pectoral ‘fn i in, i, 60 
572, 
shoulder-girdle in, i, 86, 88 
