INDEX 



Every reference is to the page : words in italics are names of genera or species ; figures 

 iu italics indicate that the reference relates to systematic position ; figures in thick 

 type refer to an illustration ; f. = and in following page or pages ; u. = note. 



Abbott, 193 n. 



Abcona, 670 



Abdominal pores, 401 f. 



A lira n / is, 582 



A iji/xsascidia, 73 



Acanthaphritis, 706 



Acaiithias, 455, 298 ; vertebral- column, 

 198 ; uterine nutrition, 434 ; A. vul- 

 garis, 264, 455 ; pectoral tin, 243 



Acanthicus, 595 



Acanthistius, 659 



Acanthoclinus, 709 

 AccaUhoeybvum, G7S 



Acauthodei, 440 f., 148 



Acanthodennn, 7 .'4 



Acanthodes, 44%! A. v'd'i'di, 441 



Acanthodidae, 441 



A rn, i thmlopsis, 442 



Acanthonus, 712 



A canthi'jiJi Umlm us, 582 



Acanthopleurus, 723 



Acanthopoma, 589 



Acanthopterygii, 650 f., 159, 306, 543 ; 



diagram showing relationships of groups, 



651 



Acanthuridae, 6GS, 357, 651, 652, 654 

 Acanthums, 60S ; A. chlranjHx, 357 

 A car a, 672 



Accessory respiratory organs, 292 

 Ai-i-tifi-iiiii</-ii, 634 

 Acentrophoriis, 4^8 

 Aceratias, 719 



Acerina, 659 ; A. cerium, 659 

 Acestra, 595 ; A. glmlius, 595 

 Acestrorhamphus, 575 

 Acestrorhynchus, 575 

 Achilognathus, 582 

 Achiropsis, 687 

 A !/!// KS, 687 

 Acipenser, 492, 149, 262, 264, 273, 274, 



276, 282, 348 ; ribs, 201 ; lymph 

 follicles, 261 ; spiral valve, 2b'8 ; gills, 

 283, 284 ; air-bladder, 298, 299 ; vas- 

 cular system, 319, 322, 328, 334 ; 

 spleen, 343 ; gonoducts of female, 400, 

 405 ; distribution, habits, and food, 493 ; 

 breeding, 494 ; economic value, 494 ; 

 -I. husu, 494; A. rlii/iiflini'us, pectoral 

 fin, 243 ; A. /////,/>>*, 493 ; scales, 187, 

 188 ; brain, 376 ; micropyles, 411 ; 

 larva, 494 ; A. stui-ln, 49:3, 494 ; verte- 

 bral column, 200 ; supra-renals, 346 : 

 micropyles, 411 



Acipeuseridae, 486, 489, 495 



Acipenseroidei = Chondrostei, q.v. 



Acrania, //' 



Acrartete, 636 n. 



. I i-rnr/i i ,,-i!,:n l< It tlnjs, 588 



A i- Tin I iis, 445 



Acrogaster, 656 



Acrognathus, 'ill 



Aoropoma, 659 



Acropomatidae, 659, 654 



Acrotun, ii'{4 



Actinistia, 4"il n. 



Actinopterygii, ^76" 



Actinotrocha, 28 f.. 29 



.l<7/.s/x, 588 



Adipose fins, 163 



.1 effoeonichthys, 719 



Aelnrichthys, 588 



Aethalion, 546 



Ai-llii-i'lfpix, Jf'.tX ; scales, 187 



Aetheospondyli. 4'.>7 



Aetobatis, 465, 466 ; spines, 177 



Airassi/, TiTiS n., 6S5 n., 720 n. 



.!'/ 'ninnii.t, ~>S9 ; A. ralfn''i' i iiii'-fi. 589 



Agnatliostomata, 145; characters of. 147 



Agoniates, .-/,"/ 



Agonidae. '700, 694 

 00 



729 



