682 



INDEX 



Allelomorphic characters, 645 



Alligator, 326, 343, 344, 346, 349, 357, 

 359 



Alpine fauna, 617* 



Altrices, 429* 



Alveoli of lung, 454 



Alveus, 561* 



Alytes obstetricans, 300, 302 



Amarcecium, 22 



Ambiens muscle, 383* 



Amblyopsis spelceus, 617 



Amblypoda, 588 



Amblystoma, 284, 290, 294, 301, 302 



American Ant-eaters, 465, 484, 509, 

 511, 512, 513, 547, 579 



Amia, 213, 218, 221, 222, 223, 227, 

 229, 231, 233, 234, 235, 236 



Amia calva, 213 



Ammoccetes, 133* 



Amnion, of Reptiles, 303, 354 : Birds, 

 427, 428 : Rabbit, 461, 462 : Mam- 

 mals, 572, 573 



Amniota, 303* 



Amphibia, 64*, 256 : Example, 257 : 

 Distinctive characters and classi- 

 fication, 283 : General organisation, 

 285 : External characters, 285 : 

 Exoskeleton, 289 : Endoskeleton, 

 289 : Myology, 294 : Digestive 

 organs, 295 : Respiratory organs, 

 295 : Circulatory organs, 296 : Ner- 

 vous system and sense organs, 298 : 

 Urinogenital organs, 299 : Repro- 

 duction and development, 300 : 

 Distribution, 302 : Mutual relation- 

 ships, 302 



Amphibolurus, 350, 355 



Amphico?lous, 142* 



Amphioxides, 43, 59, 62 



Amphioxididce, 43 



AMPHIOXUS, 43 : External features, 

 43 : Body-wall, 44, 45 : Skeleton, 

 45, 46, 47 : Digestive and respira- 

 tory organs, 46, 47, 48 : Atrium, 

 47, 49 : Coelome, 47, 49 : Blood- 

 system, 49, 50 : Excretory organs, 

 51 : Nervous system, 51, 52, 53 : 

 Sensory organs, 52, 53, 54 : Repro- 

 ductive organs, 54 : Development, 

 54, 55, 56, 57, 58, 59, 60, 61, 62 : 

 Distribution, 62 : Distinctive char- 

 acters, 62, 63 : Affinities, 63 



Amphipnous, 228 



Amphisbsenians, 324, 332, 337, 347, 

 354, 358 



Amphistylic skull, 76*, 168 



Amphitherium, 619 



Amphiuma, 284, 286, 287, 296, 298, 

 302 



Amphiuma tridactyla, 286 



Ampulla;, 111*, 112, 174* See Ear 



Ampullary canals, 158*, 174 



Anabas scandens, 228 



Anacanthini, 214*, 219, 221, 236 



Anapophyses, of Rabbit, 435* 



Anas, 403, 408, 415, 416, 605 



Anas boschas, 416 



Anatomical evidence of Evolution^ 624 



Anchinia, 22 



Anchovy, 214 



Ancylopoda, 588* 



Angler, 219 



Anyuidce, 358 



Anguis, 328, 332, 350, 358 



Angular, 199, 200* 



Angular process, of mandible, 441 

 See Skull 



Angulo-splenial, 261, 262 



Ankylosis, 195* 



Annular cartilage, of Lamprey, 122, 

 123 



Annulus ovalis, 450* 



Annulus tympanicus, of Frog, 262, 278 



Anomalur'nft, 476, 492 



Anomodontia, 326 



Anser, 403, 415 



Anseres, 403*, 422, 429 



Ant-eater, American, 465, 484, 509, 

 511, 512, 513, 547, 579 : Banded, 

 480 : Cape, 465, 579 See Onjctero- 

 pus : Scaly See Manis : Two -toed, 

 484 



Ant-eaters, 465 



Antelopes, 468, 487, 580 



Anterior clasper, 184 



Anterior commissure, 206 



Anterior vertebral plate, 167*, 169 



Anthropoidea, 472* 



Anthropopithecus, 473 See Chimpan- 

 zee 



Anth.ropopithecus troglodytes, 538 



Antiarcha, 256 



Aiitibrachium, 304* 



Antitrochariter, 380* 



Antlers, 487 



Ant orbital, 170* 



Anura, 284*, 285, 288, 289, 291, 293, 

 2!4, 295, 296, 298, 300, 301, 302 



Anwiella, 37 



Aortse, 89, 90 : Ampliioxus, 49, 50 

 See Vascular system 



Aortic arches, 92, 93 See .Vascular 

 system 



Apatornis, 402 



Apes, 494 



Aphanapteryx, 605, 622 



Apical plate, of Tornaria, 7, 8 



Apoda, 285* 



Appendicularia, 21, 24, 28, 29, 30, 41 



Ajijiciii/icii/tir/ida', 21 



Appendix, vermiform, of Rabbit, 448 



Aptcnodytes, 402 



