688 



INDEX 



Agamonts, 36 



Aggregata, 89 ; 24, 43 



Alary muscles, 437, 438 



Alciopidae, 276, 276 



Alcippe, 382 



Alcyonaria, 180 



Alcyonidium, 613 



Alcyonium, 181; i8i, 188; digitatum, 

 180 



Alepas, 382 



Algae, Symbiotic, 47, 193 



Alimentary canal, 130; of Antedon, 

 656; of Arachnida, 517; of Ara- 

 neida, 530; of Arenicola, 272; of 

 Argas, 534; of Arthropoda, 314; of 

 Asteroidea, 636; of Balanoglossus, 

 664; of Brachiopoda, 616; of Car- 

 cinuSy 412; of Chaetognatha, 618; 

 of Chirocephalus, 358; of Ciona, 

 669 ; of Crustacea, 344 ; of Cyclops, 

 373 ; of Daphnia, 367 ; of Echino- 

 dermata, 626 ; of Echinus, 643 ; of 

 Gammanis, 401 ; of Gastrotricha, 

 243; of Helix, 557; of Hirudinea, 

 297; of Holothuroidea, 650; of 

 Insecta, 43 1 ; of lulus, 424 ; of 

 Lamellibranchiata, 578 ; of Lepas, 

 379; of Ligia, 397; of Limulus, 

 529 ; oi Lithobius, 421 ; of Mollusca, 

 544, 550; of Nebalia, 391; of 

 Nematoda, 248 ;of Nematomorpha, 

 257; of Nemertea, 235; of Oligo- 

 chaeta, 287 ; of Ophiuroidea, 638 ; 

 of Pantopoda, 539; of Peripatus, 

 320; of Phoronis, 621 ; of Polyzoa, 

 606; of Pterobranchia, 668; of 

 Rotifera, 240, 241 ; of Salpida, 685 ; 

 of Scorpionidea, 522; of Sepia, 

 594; of Stomatopoda, 398; of 

 Stylaria, 291 ; of Tardigrada, 539; 

 of Testacella, 572; of the trocho- 

 sphere, 282. See also Digestive 

 system 



Allantonetna, 256 



Allogromia, 76 ; 68 ; oviformis, 'J'J 



Alloiodoela, 214 n. 



Allolobophora, 286, 287 



Alternation of generations, see Life 

 cycle 



Alveolar layer, 105 



Alveoli, of digestive gland, 558; of 

 protoplasm, 12 



Afttblyomma, 534 



Ambulacra, 623 



Ambulacral grooves, 623 ; 636, 655 

 Ambulacral ossicles, 634, 638, 645 

 Ambulacral surface, 623 

 Ametabola, 454. See also Apterygota 

 Aminoacids, 20, 52, 57, 131 

 Amiskzvia, 622 

 Amitoses of Protozoa, 24 

 Ammonoidea, 602, 604 

 Amnion, Insect, 453 ; Nemertean, 236 

 Amoeba, 69; 13, 19, 20, 28, 38; dis- 



coides, 70; dubia, 70, 70; proteus, 



69; 19, 23, 26, 36, 42, 70 

 Amoebina, 68 

 Amoeboid movement, 15 

 Amoebulae, 38 

 Amphiblastula larva, 125 

 Amphilina, 225 

 Amphineura, 547 

 Amphinucleoli, 22 

 Amphioxus, 129, 142, 145, 660, 661, 



672, 673, 675, See also Cephalo- 



chorda 

 Amphipneustic, 508 

 Amphipoda, 400 

 Amphitrite, 264 

 Amphiura, 640 

 Amphoridea, 658 

 Ampulla of stone canal, 647 

 Ampullae, of Hydrocorallinae, 165; 



of tube feet, 627 

 Ampullaria, 563 

 Anaerobic animals, 140 

 Anal papilla, 655 

 Anal suture, 468 

 Anaphothrips striatus, 485 

 Anaspides, 392; 332, 334, 336, 337; 



tasmaniae, 392 

 Ancestral group of Protozoa, 44 

 Ancylostoma, 254; 251, 252 

 Andrena, 492, 504, 514 

 Animal Kingdom, i ; 45 

 Animal pole, 281 

 Anisogamy, 31 ; 32, 46, 56-8 (passim), 



88. See also Gametes 

 Anisoptera, 472 

 Anisospores, 80 

 Annelid cross, 282 

 Annelida, 260; i, 2 

 Annuli, of crustacean limbs, 336 ; of 



leeches, 297 

 Annulus of dinoflagellates, 54 

 Anodonta, 574, 575, 579, 580, 581, 



581, 582, 585 

 Anomopoda, 363; 355, 368 



