INDEX 733 
Belonostomus, 502 
Bembras, TOO 
Bembrops, 705 
Beneden, Van, 37, 39 
Benham, 113 
Bentenia, 682 
Benthodesmus, 679 
Benthophilus, GS9 
Benthosaurus, 611 
Berycidae, 655, 651, 652, 653, 708, 303, 
361, 389 
Beryz, 656; B. afinis and B. miilleri, 
coloration, 165: B. splendens, 655 
Betta, 669; B. pugnax, 669 
Bib, 649 
Bibronia, 685 
Birkenia, 531, 149 ; B. elegans, 532 
Birkeniidae, 531 
Bitterling, 584, 416 
Black Bass, 657 
Black-Fish, 610, 643 
Blastocoele, 44, 49, 52, 130 
Blastogenetic acceleration, 84 
Blastopore, 20, 130 
Blastosphere, 20, 130 
Blastozooid, 84, 93 
Blastula, 56 
Bleak, 583, 167 
Bleekeria, 705 
Blenniidae, 709, 651, 702, 703, 704, 163, 
271, 302, 418 
Blennius, 709, 710 
Blepsias, 698 
Blind Fishes, 394, 713 ; of Mammoth Cave, 
619 
Blochius, 680 
Blood, of Hemichordata, 15 ; of Tunicata, 
49 ; of Amphioxus, 124; of Fishes, 341 
Blood-glands, 342 
Blue Shark, 448 
Boar-Fish, 666 
Boas, 548 n. 
Bola, 582 
Boleophthalmus, 6S9 
Boleosoma, 659 
Boltenia, 75; B. pachydermatina, B. 
tuberculata, dorsal tubercle, 79 
Bolteninae, 75 
Bombay-duck, 613 
Bonnet Shark, 450 of 
Bonnier and Pérez, 95 
Borgert, 99 
Bothriolepis, 534; B. canadensis, 534 
Botia, 582 
Botryllidae, 88, 81, 82, 84, 110; vessels, 
42; neural gland, 52 n.; reproductive 
organs, 56 ; ascidiozooid, 82 
Botrylloides, 88 
Botryllus, 88, 36, 90; stigmata, 59; dia- 
gram of budding, 90; B. schosseri, 80 ; 
B. violaceus, 89 
Bottard, 669, 696 n. 
Boulenger, 459 n., 477 n., 481 n., 551 n., 
584 n., 586 n., 593 n., 683 n. 
Boulengerella, 575 
Bourne, 19 
Boveri, 113, 126 
Bovichthys, 706 
Bow-Fin, 499= Ania, q.v. 
Box, 664, 665, 264, 276; BL. 
rectal caecum, 254 
Brachionichthys, 720 
Brachiopoda, 35 
Brachychaleinus, 575 
Brachymystax, 565 
Brama, 682; B. longipinnis, 682 n.; B. 
rat, 682 n. 
Bramidae, 682, 676 
Branchial bars, of Amphioxus, 120, 122 
Branchial cavity, of Tunicata, 48, 101 
Branchial clefts, 155, 277 f. 
Branchial sac, 43, 44, 45, 53 ; of Appendi- 
cularians, 67; of Thaliacea, 96, 104, 
105 
Branchial septa, of Hemichordata, 12 ; of 
Amphioxus, 120 
Branchiostoma, 137, 112, 138; distribu- 
tion, 188; B. belcheri, 137, 138; B. 
californiense, 137; B. capense, 137 ; 
B. caribbaeum, 137; Bb. elongatum, 
137, 188; B. indicum, 137; B. lanceo- 
latum, 12, 114 mn, 115; 137, 138 
transverse section, 118, 121; nephri- 
dium, 126; nervous system, 128, 129; 
gonads, 129; B. nakagawae, 137, 138 ; 
B. pelagicum, 129 n., 137, 138—see also 
Amphioxus : 
Branchiostomatidae, 737, 112 
Brauer, 571 
Breathing sounds, 357 
Breathing-valves, 288 
Breginaceros, 648 
Breitensteinia, 588 
Brevoortia, 563 
Bridge, 555, 558 n. 
Bridge and Haddon, 574 n., 587 n., 590 n. 
Brill, 687 
Brooks, 39, 101 n., 105 
Brosmius, 648 
Brosmophycis, 712 
Brotula, 712, 713 
Brychaetus, 557 
Brycon, 575 ; B. faleatus, mouth, 577 
Bryconaethiops, 575 
Bryconodon, 575 
Bryconops, 575 
Bucklandium, 589 
Budding, in Pterobranchia, 24, 27; in 
Tunicata, 71, 80, 81 f., 90, 97, 103 
Budgett, 482, 483 n., 514, 552, 558 
Bull-heads, 698 
Bullhead Sharks, 444 
Bunocephalichthys, 596 
Bunocephalus, 596 
vulgaris, 
