756 



INDEX 



Ammonites, 737, 741 



Amnion, of Peripatu*, 564 : Perijrfaneta, 

 581 : Scorpion, 610 



AMOSBA, 10, 11, 12, 13, 14: Pseudopods, 

 44 : Endosarc, 44 ; Ectosarc, 44 : Con- 

 tractile vacuole, 44 : Encystation, 44 : 

 Fission, 44 : Systematic position, 46 



Amcebocytes, 352, 368 



Amcebula, of Greyariiia, 77 



Amphiblastula, 113", 114 



Amphidiscs, 112 



Amphilina, 267 



Amphmeura, 631 : Distinctive characters 

 and classification, 663 : General organi- 

 sation, 663 : External features, 663, 

 664, 665 : Alimentary system, 665 : 

 Body-cavity, 666 : Vascular system, 

 666 : Nervous system, 666, 667 : Re- 

 productive and renal organs, 668 : 

 Development, 669 : Ethology, distribu- 

 tion, etc., 670 



Amphipoda, 524*, 543, 544, 545, 547, 550 



Amphiptyches, 247, 2(>7 



Amphixtonuun, 242 



Amphitrettis pelagicits, 749 



Ampulla, 349, 350 



A'tp/i//(iria, 699 



Amuvium, 653, 655 . 



Anal filament, 614 



Anal glands, of Pert pat u*, 562 



Anal respiration, 550 



Anal spot, of Paramuecium, 81 



Anatomy, 3* 



Awjuillida, 283 



Anisopoda, 543 



Annulata, 403 : General remarks on, 481 



Annuli, of Leech, 463 



ANODONTA, 631 : Shell, 633 : Body, 635 : 

 Muscles, 635 : Coelome, 635 : Digestive 

 organs, 636 : Gills, 636 ; Excretory 

 organs, 640 : Circulatory system, 640 : 

 Nervous system, 641 : Sensory organs, 

 642 : Reproductive organs, 642 : De- 

 velopment, 643 : Systematic position, 

 647 



Anodonta, 649, 652, (554, 655, 659 



Anomia, 646, 648, 649 



Antedon, 391 



Anoplophyra, 85 



ANTEDON ROSACEA, 373 : General external 

 features, 373 : Ossicles, 374 : Coelome, 

 374 : Enteric canal, 375 : Ambulacra! 

 system, 375 : Nervous system, 375 : 

 Blood-vascular system, 376 : Sacculi, 

 376 : Reproductive organs, 377 : Meta- 

 morphosis, 377 : Systematic position, 

 381 : Development,^ 398 



Antenna, of AxfarH*, 502 See also Ap- 

 pendages 



Antennary gland, of Astacus, 509, 510 



Antennary glands, 523, 55n 



Antennule, of A$tacnv, 502 See also 

 Appendages 



ANTHENEA FLAVESCENS, 356, 357, 358 



Anthomedusae, 131*, 133, 134 



Anthophysa, 66 



Anthojonia, 530, 531 



Antimeres, 40 



Antipatharia, 182*, 187, 188, 190, 197 



Ant-lions, 585 



Ants, 587, 603 



Aorta See Vascular system 



Aphides, 598 



Aphroditea, 435, 436 



Apical plate, of Trochosphere, 298 



Apical system of plates, 362, 365 



Apia mellifica, 589, 603 



Aplacophora,663, 664,666, 668, 669, 671 



Aplysia, 687, 688, 695 



Aph/xiidw, 684 



Apoda (Holothuroidea), 380 



Apopyle, 99, 101*, 108 



Appendages, of Rotifera, 306 : Apn, 

 487, Astacus, 500, 501 : Crustacea, 

 525 : Peripattix, 560 : Peripnetalff,, 

 572 : Insecta, 588 : Scorpion, 606 



Aptera, 583, 591 



Aptus rosit j , 585 



Aptychus, 741 



APUS, 484 : External characters, 485 : 

 Appendages, 487, 488 : Body-wall, 

 489 : Muscular system, 490 : Digestive 

 organs, 490, 491 : Body-cavity, 491 : 

 Circulatory system, 491 : Respiration, 

 4!2 : Renal organ, 492: Nervous system, 

 492, 494 : Organs of sense, 494 : Re- 

 productive organs, 495 : Development, 

 496 : Systematic position, 524 



J////.S, 552 



Apii* cancriformis, 485, 489 



Apn* f/!ari(.(/i, 487 



Aquatic pupa, 602 



Arachnida, 484, 604 : Example, 604 : 

 Distinctive characters and classifica- 

 tion, 611 : General organisation, 613 : 

 External form, 613, 619 : Endosternite, 

 618 : Coxal glands, 618 : Alimentary 

 system, 618 : Heart, 619 : Organs of 

 respiration, 619 : Nervous system, 

 621 : Sense-organs, 621 : Reproductive 

 apparatus, 622 : Mode of life, 623 : 

 Geological history, 624 : Appendix, 

 624 



Arachnidium, 615 



Araneida, 612*, 618, 621 



Arbacia j)tmctulata, pedicellaria, 389 



Area, 646, 648, 652, 653, 655, 658 



Areella, 48 



Archenteron, 21* 



Archi-Annelida, 462, 482 



Archi-cerebrum, 513 



Archi-cerebrum, of Periplaneta, 5fc-2 



ArcM-Chaetopoda, 427 



ArcJtigetes, 247, 267 



Architeuthis, 749 



Aryiope, 338 



