758 



INDEX 



Bir(/ti, 528, 54!) 



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



Black coral, 182 



Blastoccele, 20* 



Blastoidea, 380 



Blastomeres, 2'i- 



Blastopore, 21* 



Blastosphere, 20* 



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

 Iina3, 140 : Porpita, 153 



Blastula, 20* 



BlattaSee Periplaneta 



Blattidv, 587 



Blood, 82 



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 : 

 Atcaris, 276: Nematoda, 283: Ch^to- 

 gnatha, 293 : Brachionus miens, 300 : 

 Bugula, 316: Ectoprocta, 323: Magel- 

 lania, 335 : Asterias, 351 : Sea-cucum- 

 ber, 370 : Nereis, 408 : Earthworm, 

 419 : Cha3topoda, 434 : Sipuncuius, 451 : 

 Gephyrea, 456 : Hirudo, 467 : Apus, 

 489 : Astacus, 504 : Crustacea, 547 : 

 Peripatus, 561 : Myriapoda, 569 : In- 

 secta, 588 



Bojanus, organs of, 640 



Bolina hydatina, 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 



Bothriocephalus latus, 265 



Botryoidal tissue, of Leech, 467 



Bougainvillea, 133, 134, 140 



Brachial disc, of Discomedusa?, 171 



Brachiolaria, 397 



Brachionidce, 304* 



Brachionux, 307 



BRACHIOXUS RUBENS : External charac- 

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

 gestive organs, 300, 301 : Ctelome, 301 : 

 Excretory system, 301 : Nervous sys- 

 tem and sense-organs, 301 : Reproduc- 

 tion and development, 302 : Systematic 

 position, 304 



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 : Nephridia, 340 : 

 Nervous system, 341 : Gonads, 341 : 

 Development, 341 : Distribution, 342 



Brachyura, 523*, 539 



Bract, 489 



Brain, 3&^ 



Branckellion, 475, 476, 477, 481 



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

 urchin, 364 : Polychseta, 433, 434 : 

 Oligochseta, 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 



Branchipus, 521, 526 



Branchiura, 522*, 528 



Brine-shrimp, 526 



Brood-pouch, 527 



Buccal cavity, 30 



Buccinum* undcUum, 671 



Budding, 38* See Asexual reproduction 



Budding, in' Turbellaria, 240 



Buffori, 5 



Bugs, 585, 591, 602 



Bufjula, 320 



BUGULA AVICITLABIA, 314, 315 : Bodv- 



wall, 316 : Ccelome, 316 : Alimentary 

 canal, 317 ; Nervous system ; Repro- 

 ductive organs ; Development, 317, 

 318 : Systematic position, 320 



Bw/ula piumosa, 317 



Bmycon, 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 



G 



C 



/ADDIS-FLIES, 585 



Calcarea, 103% 111, 112, 115, 116 

 Calcareous spicules, of Sponges, ( 



111, 112 



Calciferous glands, 421 

 Caltianira, 209 

 Callitiara, 139 

 Ccdoccddnus, 529 

 Calotte, 317 



Calymna, of Radiolaria, 58 

 Calyptoblastea, 133* 

 Cambrian, 7 

 Canaliculre (bone), 25 



