INDEX 



811 



pfaneta, 621 : Insecta, 037 : Scorpion, 



<;.v> 



Apm n<!> t, ~><>7 



Aptera, 632*, 640, 677 



Aptyohus, 795* 



Aim E8, 526 : External characters, 527 

 528 : Appendages, 529, 530 : Body 

 wall, 531 : Muscular system, 532 

 Digestive organs, 532, 533: Body 

 cavity. 'V.V.I -. Circulatory system, 533 

 Respiration. 534 : Renal organ, 534 

 535 : Nervous system, 534, 536 

 < )rgans of sense, 536, 537 : Reproduc 

 tive organs, 537 : Development, 537 

 538 : Systematic position, 569 



A pu<, 534. 535, 537. 538 



A /ins cancriformia, 528, 536 



A /his glackdi*, 529 



Aquatic pupa, 651 



Arachnida, 526, 653*, 677 : Example, 

 <>."">,"{ : Distinctive characters and classi- 

 fication, 660 : General organisation, 

 (i&2 -. External form. 662-667 : Endo- 

 stcniite, 667 : Coxal glands, 667 : 

 Alimentary system, 667 : Heart, 668 : 

 Organs of respiration, 668 : Nervous 

 system, 670 : Sense-organs, 670 : Re- 

 productive apparatus, 671 : Mode of 

 life, 672: Geological history, 073: 

 Appendix, 673 



Arachnidinm, 664 



Araneida, 661*, 664, 667, 669, 670 



A rhmia punctidata, pedicellaria, 422 



Arm. 695, 897, 701, 702, 704, 706, 711 



Arcella, 4B, BQ 



Archwocytes, 122 



Arehenteron 23* 



Archi-Annelida, 439, 503*, 504, 505. 524 



Archi-cerebrum. 665 



Archi-cerebrum, of Periplaneta, 631 



Archi Chaetopoda, 465*, 477 



ArckigeUs, 262, 263, 287 



ArvJuteuthit, 803 



A rgiope, 366 



A njonauta argo, 793, 796 



Argonauts, 790, 791, 796 



Argu/us, 565, 576, 577 



Arhynchobdellida, 516* 



Aricia, 479 



Aristotle's lantern, 397 



Ark-shell, 702 



Arnmdillidium, 586, 587 • 



Armadillo, 524. 543 



Armata, 496*, 497, 498, 499, 502 



Arrow worms, 297 



Artemia,5Q3, 571 



Arthrobranchiaj, 551 



Arthropoda. 526* : Affinities of air- 

 breathing, 677 



Arthrostraca. 583* 



Articulata, 366*, 367, 368, 369: Shell, 

 398 



Axcaridn', 304* 



Am akis lumisuh <ui>ks, 297 : External 

 characters, 297 : Body-wall, 298 : 

 Digestive organs, 299, 300 : Ccelome, 

 301 : Excretory system, 301 : Nervous 

 system, 301, 302 : Reproductive 

 organs, 302, 303 : Development, 303 : 

 Systematic position, 304 



A scar is megaloeepha/a, 297 



Ascaris nigrovenow, 308, 309, 310 



Ascaris suit la, 297 



Ascttta, 116 



Ascon, 117, 118* 



Ascopodaria, 354 



Asellus, 568, 583, 585 



Asexual reproduction, 40 : in Amoeba, 

 46 : Heliozoa, 59 : Radiolaria, 63 

 Euglena, 69 : Flagellata, 74 : Choano 

 flagellata, 78 : Dinoflagellata, 79 

 Cystoflagellata, 79 : Sporozoa, 80 

 Coccidiidea, 84 : Haemosporidea, 86 

 Myxosporidea, 87 : Paramcecium, 90 

 Ciliata, 98 : Tentaculifera, 101 

 Sponges, 121 : Actinozoa, 197 : Platy 

 helminthes, 283: Bugula, 346 

 Chaetopoda, 486 



Aspergillus, 096, 701, 702 



Aspidobranchia, 733* 



Aspidochirotae, 415 



Aspidocotylea, 253*, 260, 273 



Aspidogasterj 284 



Asplanchna, 328, 330, 331 



Astacopsis, 569 



Aetactu, 569 



Astacus fluviatilis, 539, External 

 characters, 540 : Abdomen, 541, 

 Thoracic region, 541 : Head, 542 : 

 Appendages, 542, 543 : Articulations, 

 545 : Body-wall, 546 : Muscular 

 system, 546, 547 : Digestive organs, 

 548 : Respiratory organs, 54it. 550 : 

 Excretory organs, 551, 552 : Circula- 

 tory organs, 551, 552, 553, 554: 

 Nervous .system, 555 : Sensory organs, 

 556 : Reproduction, 556, 557 : Develop- 

 ment, 557, 558, 559, 560, 561 : System- 

 atic position, 57' I 



Astasioptis, 71 



Astkkias RUBBN8, 375 : General external 

 features, 375, 376, 377 : Transverse 

 section of an arm. 378 : Vascular and 

 nervous systems, 379 : Structure of the 

 disc, 380 : Body-wall andcudome, 381 : 

 Digestive system, 382 : Ambulacra! 

 system, 383 : Reproductive system, 

 386 : Systematic position, 414 



Affteriidtv, 414* 



Asterina, development, 388, 389, 390, 

 391. 392, 393 



.!>'< rina yibbosa, 429, 432 



Asteroidea, Example, 375 : Development, 

 388 : Distinctive characters and classi- 

 fication, 410 : Apical system, 417 : 

 Modifications of form, 418, 419 : 



