924 



INDEX 



Ampullae of ]L,orenzini, 437 

 Amyda, 550 



Amylopsin, 385, 386, 502 

 Anabolism, 86, 377 

 Anabrus simplex, 315 

 Anacanthini, suborder, 451 

 Analogy, 271 

 Anaphase, 62, 63 

 Anapsida, subclass, 547 

 Anasa tristis, 318 

 Anastomosis, 107 

 Anatomy, gross, 20 

 Ancestry of Arthropoda, 865 

 Anchoviella mitchilli, 448 

 Anchovies, 448 

 Ancylis comptana, 326 

 Ancylostoma, hookworm, 745, 751 

 Andalusian chickens, 830 

 Androgenic hormone, 676 

 Androsterone, 676 

 Anecdotal period, 847 

 Anglers, 455 

 Ansuidae, family. 552 

 Anguillidae, family, 449 

 Angulosplenial bone, 520 

 Ani, 591 



Animal and its environment, 719 

 anomalies, 654 

 behavior, 846 

 cell, 58 



distribution, 711 

 kingdom, 25 

 parasitism, 735 

 Animals of Gulf of Mexico, 778 

 Anisoptera, suborder, 321 

 Annelida, 26, 194 



phylogenetic advances, 216 

 theory of evolution, 867 

 Anniellidae, family, 553 

 Annuli, 212 

 Annulus, 268 

 Anodonta, 249 



stewartiana, 248 

 Anolis, 552 



Anomocoela, suborder, 485 

 Anopheles mosquito, 74. 79 

 Anoplura, order, 266, 333 

 Anseriformes, order, 589 

 Ant lions, 266, 322 

 Anteater, giant, 621 

 scaly, 621 

 spiny, 617 

 Antebrachium, 495 

 Antedon. 225 

 Antelope, 630, 785 

 Antennae, 269, 271 

 Antennata, division, 265 

 Antennules, 269, 271 

 Anterior cardinal veins, 434 



fontanelle, 428 

 Anthelmentics, 750 

 Anthonomus grandis, 324 

 Anthozoa, class, 140 

 Anthropoid apes, 637 

 Anthropoidea, suborder, 635 

 Anthropopithecus troglodytes, 637 

 Antibodies, 395, 884 

 Antigen, 395 

 Antilocarpa americana, antelope, 



785 

 Antipathes, 143 

 Antipathidea, order, 143 

 Antithrombin, 395 

 Antrum, 812 

 Ants, 266, 331 

 Anura, order, 485 

 Aortic arches of vertebrates, 882 

 Apes, 635, 637 



630, 



Aphelodactyla, 224 

 Aphid, beet, 317 



black cherry, 318 



rosy apple, 316 

 Aphididae, family, 318 

 Aphids, 318, 340 

 Aphis lions, 266 



maidi-radicis, 340 



roseus, 318 

 Aphrodita, 195 

 Apical organ, 237 

 Ap.on proclive, 324 

 Aplodinotus, 454 

 Apodes, suborder, 449 

 Apopyles, 124 



Ai-pendicular skeleton of frog, 520 

 Appendicularia, 361 

 Appendix, vermiform, 878 

 Apteria, 601 

 Apterygiformes, 585 

 Ap^erygoi-a, subclass, 309 

 Apteryx, 585 

 Aqueous humor, 529 

 Aquila chrysaetos, 590 

 Arachnid theory of evolution, 867 

 Arachnida. class, 266, 292 



classification, 295 

 Arachnoid, 650 

 Arachnoidea, division, 266 

 Aranea gemma, 296 

 Arane.da, order, 266, 295 

 Arbacia, 220, 222 

 Arcella, 67 



Archaeopteryx, 861, 869 

 Archenteron, 117, 210. 535 

 Archianneiida, 194, 212 

 ArchiteuLhis princeps, 260 

 Arciferal pectoral girdle, toad, 542 

 Ardeidae, family, 588 

 Arenicola, 195 

 Argentines, 449 

 Argen.inidae, family, 449 

 Argiopldae, family, 296 

 Argulus, 264, 265, 284 

 Ariidae, family, 450 

 Aristotle, 3 6 

 Aristotle's lantern, 221 

 Armadillidium, 282 

 Armadillo, nine-banded, 621 



embryos, 622 

 Arrowworms, 193 

 Artemia, 283 



Arteries, efferent branchial, 463 

 of frog, 503 

 of horned lizard, 568 

 of toad, 542 

 Arthrobranchiae, 271 

 Arthroleptella lighlfooti, 479 

 Arthropuda, phyiogeneiic advances. 



286 



phylum. 



263, 746 



wormlike ancestry, 865 

 Arthropodial membrane, 268 

 Arthrorhabdinus, 291 

 Articular bone, 467 

 Artiodactyla, order, 629 

 Ascaphus, 479 



truei, 485 

 Ascaridia lineata, 176 

 Ascaris, 175, 176, 179 

 in.einal anatomy, 181 

 intestinal worm, 745 

 life cycle, 182, 183 

 relations to man, 183 

 Ascaroidea, order, 176 

 Ascidiacea, 361 

 Ascon, 124, 125 

 Ascorbic acid, 390 

 Asellus, 281, 282, 283 



