INDEX 



729 



Ammocoetes, 448 



Amnion, 450, 563 



Amniota, 450, 563, 564, 565, 566, 567 



Amoeba, 15, 16, 141 ; in infusions, 19 



Amoebidea, 34, 46 



Amoebocytes, 141, 148, 173, 328 



Amoebula, 28 



Amphibia, 431, 442, 450, 452, 510, 519 ; 

 classification of, 560 



Amphiblastula, 89 



Amphicoelous, 474 



Amphioxus, 390, 391, 392, 393, 394, 

 395, 396, 397, 398, 399, 400, 401, 

 402, 428, 439, 446 ; origin of meso- 

 blast in, 134 



Amphipoda, 222, 279 

 Amphisbaenidae, 589 

 Amphistylic, 457 

 Amphiuma, 542, 561 

 Amphiumidae, 561 

 Ampulla, 420 

 Ampullae, 333, 353 

 Amylopsin, 429 

 Anabolism, 5 

 Anal cerci, 233 

 Anal fin, 482 

 Anal styles, 237 

 Anamnia, 450, 452 

 Anas, 612, 613, 634 

 Anaspides, 224 

 Anchovy, 489, 490 

 Anguidae, 586 

 Anguilla, 514 

 Anguilliformes, 490, 514 

 Anguis, 585, 586, 604 

 Angular bone, 575 

 Animal, 1 



Animals compared with plants, 2 

 Anisopleura, 323 

 Anisospores, 27 

 Anisotropic substance, 200 

 Ankle, 521, 614 



Annelida, 125", 138, 155, 168 ; classifica- 

 tion of, 165 

 Annular cartilage, 443 

 Annuli, 161 

 Anodonta, 298, 299, 300, 301, 303, 306, 



325 



Anomalurus, 703 

 Anomura, 217 

 Anopheles, 45 

 Anopla, 118 

 Anostraca, 268, 277 

 Anser, 634 



Anseriformes, 632, 634 

 Ant, 256 



Ant-eater, American, 666,668; banded, 

 662 ; Cape, 666, 669 ; scaly, 666, 669 ; 

 spiny, 656; Tamandua, 666, 668 

 Antebrachium, 520 

 Antedon, 361, 362, 363, 364, 365, 366 



Antelope, 692, 695 



Antennae, 175, 176, 208, 233 



Antennary gland, 209 



Antennata, 175, 225, 280 



Antennules, 185, 186, 208 



Anterior, 136 



Anterior abdominal vein, 536 



Anterior fontanelle, 647 



Anterior gastric muscles, 189 



Anterior nephridia, 168 



Anthropoidea, 709, 710, 716, 726 



Anthropopithecus, 712, 727 



Antilocapra, 694, 6^7, 725 



Antilocapridae, 694, 697, 725 



Antlers, 696 



Ant-lion, 254 



Anura, 524,544, 546, 579; classification 

 of, 558, 561 



Anus, 38, 136, 167, 480 



Aorta, 240, 432, 433, 654 



Aphaniptera, 258, 282 



Aphis, 257, 281 



Aphis-lion, 254 



Aphrophora, 257 



Apis, 256, 281 



Aplysia, 293, 324 



Apoda, 524, 560, 562 



Apodemes, 175, 201 



Appendages of Arthropoda, 176 

 Aptera, 245, 249, 251, 280 



Apteria, 607 

 Apteryx, 631, 633 

 Apus, 204, 205, 215, 277 

 Aquatic Carnivora, 721 

 Aqueous humour, 423, 444 

 Aquila, 634 



Arachnida, 175, 259, 276, 282 

 Araneida, 260, 282 

 Arcella, 20, 21 

 Archacopten/x, 628, 630, 633 

 Archaeornithes, 633 

 Archegosanrus, 528 

 Archigetes, 111 

 Archinephric duct, 439 

 Archipterygium, 509 

 Arcifera, 558, 562 

 Arctomys, 701 

 Ardea, 634 

 Argiope, 373, 375 

 Argyroneta, 263 

 "Aristotle's lantern," 347, 349 

 Armadillo, 666, 667, 668 

 Arms, of Brachiopods, 371; of Mol- 

 luscs, 312 



Artemia, 205, 208, 277 

 Arterial arches, 402 

 Arthrobranchs, 187 

 Arthrodial membranes, 176 

 Arthropoda, 174; appendages of, 179; 



classification of, 175, 277 

 Arthrostraca, 217, 221, 279 

 Articular bone, 477, 480, 574 



