758 



INDEX 



Biryus, 523, :>4 ( .i 



Bivium, 348, 366 : of Sea-cucumber, 369 



Black coral, 182 



Blastociele, 20* 



Blastoidea, 380 



Blastomeres, 20* 



Blastopore, 21* 



Blastosphere, 20* 



Blastostyle, of Obelia, 119,* 120: Septo- 

 limt, 14i.i : Porpita, 153 



Blastula, 20* 



Blatta See Periplaneta, 



Jl/it/f !,/,/, 587 



Blood, 32 



Blood-vascular system See Vascular 

 system 



Blood-vessels, 32 



Blow-flies, 586 



Blue coral, 182 



Body-cavity See Coelome 



Body-wall, of Sea-anemone, 175: Hormi- 

 phora, 202: Liver-fluke, 226: Platy- 

 helminthes, 248 : Nemertinea, 269 : 

 ,4 -scan's, 276 : Nematoda, 283 : Chaeto- 

 gnatha, 293 : Brachionus rubens, 300 : 

 Buijula, 316: Ectoprocta, 323: Magel- 

 lan ia, 335 : Asterias, 351 : Sea-cucum- 

 ber, 370 : Nereis, 408 : Earthworm, 

 419: Chfetopoda, 434: Sipunciilns, 451 : 

 Gephyrea, 456 : Hirudo, 467 : Apt'*, 

 489 : Astacus, 504 : Crustacea, 547 : 

 Pe.ripa.tiis, 561 : Myriapoda, 569 : In- 

 secta, 588 



Bojanus, organs of, 640 



li< 'I ina hydatinu, 211 



Bone, 25*, 26 



Bone-corpuscles, 25" 



Bondlia, 455, 456, 458, 460 



Book-gills, 621 



Book-lungs, 608, 619, 621 



Book-scorpions, 611 



Bopyrini, 546, 547 



Bopyrus, 524 



Bot-fly, 586 



BothriocepJialus, 256, 259 



Bothriocephahis latus, 265 



Botryoidal tissue, of Leech, 467 



BougainvUlea, 133, 134, 140 



Brachial disc, of Discomedusre, 171 



Brachiolaria, 397 



Brachionidn', 3u4* 



Brachioitiix, 307 



BRACHIONUS RUBENS : External charac- 

 ters, 299, 300 : Body-wall, 300 : Di- 

 gestive organs, 300, 301 : Ccelome, 301 : 

 Excretory system, 301 : Nervous sys- 

 tem and sense-organs, 301 : Reproduc- 

 tion and development, 302 : Systematic 

 position, 3'4 



Brachiopoda, 331 : Example, 321 : Dis- 

 tinctive characters and classification, 

 337 : Systematic position of example, 

 338: General organisation, 338 : Shell, 



338, 339 : Peduncle, 339 : Lophophore, 

 339 : Muscular system, 339 : Enteric- 

 canal, 340 : Heart, 340 : Xephridia, 34< ) : 

 Nervous system, 341 : Gonads, 341 : 

 Development, 341 : Distribution, 342 



Brarlu/Hi-a, 523*, 539 



Bract, 489 



Brain, 36 



Jl,;ii/<'h<-/Iio)i, 475, 476, 477, 481 



Branchiae, 33*: of Asterias, 347: Sea- 

 urchin, 364 : Polychwta, 433, 434 : 

 Oligoehseta, 434 : Branchellion, 475, 

 477 : Astacus, 507, 508 : Crustacea, 

 548 : Anodonta, 636, 637, 638 : Pelecy- 

 poda, 653 : Triton, 676, 677 : Gastro- 

 poda, 690 



Branchial formula, of Astacus, &c. , 549 



BrancMpus, 521, 526 



Branchiura, 522*, 528 



Brine-shrimp, 526 



Brood-pouch, 527 



Buccal cavity, 30 



Bwrhitiiii innlatiim, 671 



Budding, 38* See Asexual reproduction 



Budding, in Turbellaria, 240 



Buffon, 5 



Bugs, 585, 591, 602 



Burjula, 320 



BUCULA AVict'LARiA, 314, 315 : Body- 

 wall, 316 : Coelome, 316 : Alimentary 

 canal, 317 ; Nervous system ; Repro- 

 ductive organs ; Development, 317, 

 318 : Systematic position, 320 



Buyida plumosa, 317 



Buxyeon, 699 



BUTHUS, 604 : External features, 605 : 

 Digestive system, 607, 608, 609 : Cir- 

 culatory organs, 607, 608 : Organs of 

 respiration, 608 : Nervous system, 608, 

 609 : Organs of special sense, 609 : Re- 

 productive organs, 609 : Development, 

 610 



Butterflies, 587 



Byssus, 645, 653 



Byssus-gland, 645, 652 

 Byssus, provisional, 644 



c. 



CADDIS-FLIES, 585 



Calcarea, 103*, 111, 112, 115, 116 

 Calcareoiis spicules, of Sponges, 98, 99, 



111, 112 



Calciferous glands, 421 

 Cal/ianira, 209 



< 'allitiara, 139 



< 'ii/tii-ti/rain-i, 529 

 Calotte, 317 



( 'alymna, of Radiolaria, 58 

 Calyptoblastea, 133* 

 Cambrian, 7 

 Canaliculffi (bone), 25 



