aal-mutter, ii, 144 
Abbott, i, 415, 
ii, 3°07; 534 
on perch, ii, 307, 
abdominal fishes, i li, 39 
Abdominales, i, 393; ii, 38, 
39 
Abeona, ii, 375 
Abramis, ii, 167 
figure of, ii, 168 
Aboma, 
figure of, ii, 462 
abundance of food- fish, i, 329 
abura-ainame, ii, 440 
abura-bodzu, ii, 323 
aburazame, i, 524 
Acantharchus, ii, 297 
Acanthistius, ii, 323 
Acanthobatis, i, 553 
Acanthocephala, i, 344, 351 
Acanthocepola, li, 363 
Acanthoclinide, ii, 516 
Acanthoclinus, ii, 516 
Acanthocybium, ii, 266 
Acanthodei, i, 65, 437, 447, 
513, 519, 545, 561 
Dean on, 1, 517 
families of, i, 516 
order of, - 514 
Woodward on, i, 514 
Acanthoésside, i, 515, 516 
Acanthoéssus, i, 446, 510-513 
figure of, i, 515 
scales of, figured, i, 521 
Acantholabrus, ii, 387 
Acanthonemus, ii, 286 
Acanthopteri, ii, 157 
Acanthopterygian, il, 39, 293 
Acanthopterygii, i, 391; ii, 
189, 208-214 
Acanthostracion, i, 377 
Acanthurida, i, 206; ii, 405, 
407, 410, 411 
family of, ii, 407 
Acanthurus, i, 268, 2713 ii, 
407, 409 
Acanus, ii, 330 
Acara, ii, 381 
Acentronura, ii, 236 
Acerina, ii, 241, 309 
Acentrophorus, ii, 23 
419, 4223 
INDEX 
Achirine, ii, 495 
Achirus, 
figure of, ii, 496 
Acipenser, i, 291, 332, 391, 
452; ii, 18, 19, 20, 22 
figure of, ii, 19, 20 
larva of, figured, i, 141 
Acipenseride, i, 290; ii, 18 
Acipenseroidei, i, 382 
Acraniata, i, 484 
Acrocheilus, ii, 169 
Acrogaster, ii, 252 
Acrognathus, ii, 34 
Acropoma, ii, 317 
Acropomide, il, 317 
Acrotide, ii, 285 
Acrotus, ii, 285 
Actinistia, i, 602 
order of, i, 604 
Actinopteri, i, 451, 507, 599, 
610; ii, 1, 2, 4, 5, 208 
Actinopterygii, i, 462; ii, 1 
Actinosts, li, 1, 33 
actinotrichia, i, 80 
Adaptation of fishes, i, 177- 
‘ 
225 
adaptive radiation, , 
law of, i, 296 
adder-fish, ii, 501 
Adelfisch, ii, 65 
Adelochorda, i, 461 
Adinia, ii, 199 
adipose fin, i, 25 - 
Egeonichthys, ii, 549 
£oliscus, 
figure of, ii, 235 
‘Erolepis, ii, 14 
Ethalion, ii, 41 
Ethospondyli, ii, 24, 29 
7Ethoprora, 
figure of, i, 188 
Aétobatis, i, 557 
figure of, i, 558 
African catfish, 
figure of, i, 457; ii, 185 
Agassiz, A., i, 405 
Agassiz, L., i, 419, 428, 614; 
ii, 1, 30, 183, 486 
on dispersion, i, 284 
on Embiotocide, ii, 378, 
379 
Agassiz, L., 
on embryology of garpike, 
ii, 31 
on fish fauna of N, E., i, 
302 
on fossil fishes, i, 404 
on ganoids, ii, 9 
on high and low forms, i, 
381 
on Lepidosteus, ii, 5 
on Onchus, i, 530 
portrait of, i, 399 
pupils of, i, 405 
questions raised by, i, 284 
sketch of, i, 404 
Age of fishes, i, 144-146 
agency of ocean currents, i, 
243 
Agnatha, i, 508 
Agonide, i, 208; ii, 3, 185, 
452) 453) 456 
family of, ii, 449 
Agonoid fish, 
figure of, i, 221; li, 453 
Agonostomus, ii, 107, 222 
Agonus, i, 219; ii, 453 
Agrammus, i li, 440 
Ahl, i, 394 
aholehole, i li, 304 
air-bladder, i, 11 
air-duct, i, 12 
Aristotle on, 95 
Borelli on, i, 95 
of Carp, i, 93; ii, 159, 160 
in Coelacanthus, i, 604 
defined, i, 92, 93 
De Fosse on, i, 97 
Delaroche on, i, 95 
figure of, i, 93, 604 
function of, i, 94 
in ganoids, i, ror 
gases in, i, 94 
in Labyrinthici, i, g1 
an organ of hearing, ii, 159 
origin of, i, 98 
position of, i, 35 
Sorensen on, i, 97 
Tower on, i, 95 
use of, i, 12 
wanting in sharks, i i, 506 
Weber on, i, 96 
555 
