TNDKX 



CM! I 



^m, 416, 429 



Arat-linoid inembrano, 108 



Arbor vitas of Kabbit, 472 



Arboreal fauna, (587 



Archaeoceti, 60") 



Arrhcohydrax, (J07 



ArcluL'opliryx lifhoiiraphicu, 410, 418, 



419, 448, 444, 445, 640 

 ArrhiKipii ri/x siemcit.iii, 420 

 Archseornithes, 410*, 418 

 Arclienteron, 2f>() 

 Archipalliiun, 'u^J* 

 Archiptervgiuiii, 168*, 257 

 Ara'fera,29i* 

 Arctomys marmot, 638 

 Ardea, 415, 422. 428 

 Area opaca, 363. 437 

 Area pellucida, 363. 437 

 Area vasculosa, 440 

 Argentea, 214* 

 Aristotle, 668 

 Armadillos, 479, 490, 498, 499, 524, 525, 



626, 528, 530, 531, 564, 598, 604 

 Arteries, 92^See Vaseular system 

 Artlirodiru, 260 

 Articular, 80, 81*— See Skull 

 Artiodactyla, 482*, 501, 536, 538, 541, 



543, 544, 564, 576 

 Arvkola, 594 

 Arytenoids, of Lizard, 328 : Reptilia, 



357 : Pigeon, 397 : Rabbit, 466 

 AsciDi.v, 14 : Body- wall and Atrial 

 cavity, 15, 16 : Pharynx, 16, 17, 18, 

 19 : Enteric canal, 19 : Blood system, 

 18, 19 : Nervous system, 20, 21 : Neural 

 gland, 21 : Excretory system, 21 : 

 Reproductive system, 21 : Sj'Stematic 

 position, 24 : Development, 32 



Ascidiacea, 28* 



Ascidiae compositae, 28*, 26 



Ascidiae simplices, 28*, 25 



Ascidia mammiUata, 37 



Ascidians, 14 



Ascidiid(£, 24 



Aspredo, 241 



Asses, 482, 599 



Astacopsis, 622 



Astacus, 621 



Asteriscus, 214*, 215 



Astragalo-scaphoid, 355 



Astragalus, 274, 458 — See Limb-skeleton 



Astroscopus, 233 



Atelea, 487 



Athecata, 371 



Atlas, 316* 



Atrial canals, of Appendicularia, 24 



Atrial cavit}' of Ascidia, 15, 18 



Atrial siphon, 15, 18 



Atrial lobes, of Doliolum, 27 



Atriopore, of Amphioxtis, 46, 45, 49 



Atrium, of Ascidia, 15, 36 : Amphioxtis, 

 49 



Auditory capsules, of Craniata, 76* 



Auditory nerve, 104, 105 — See Brain 



Auditory organ — See Ear 



Auditory ossicles, 455— See Ear 



Auditory region, of Oaniata, 76* 



Augustine, 675 



Auks, 416, 436, 443, 444 



Autostylic, 78*, 190 



Auricle, 90— See Heart 



Auricular appendix, 463 



Australian region, 631 



Aves, 66, 313, 378 : Example, 378 : 

 Distinctive characters and classifica- 

 tion, 408 : (Jeneral organisation, 417 : 

 Archwornithes, 418 : External char- 

 acters of Neornithes, 420 : Pterylosis, 

 422 : Skeleton, 424 : Myology, 433 : 

 Digestive organs, 433 : Respiratory 

 and vocal organs, 434 : Circulatory 

 organs, 434 : Nervous system and 

 sense organs, 434 : Urinogenital 

 organs, 435 : Development, 485 : Dis- 

 tribution, 442 : Ethology, 443 : Phylo- 

 geny, 443 



Avocet, 421 



Axis, basi-cranial, 513* 



Axolotl, 293, 311 



Aye-Ayes, 486 



Axis, 316 



Azj'gos vein of Rabbit, 464 



Azygos veins of Urodela, 306, 307 



B, 



B 



►aboons, 487, 614, 554, 556 



Baer, K. E., von, 680 



Balcena, 480 



Balienidre, 480 



Bahfiioptera musruliifi. 582 



Balienoptera rostrala, 567, 568 



Balanorjlos-ms, 2, 43 : External characters, 

 2, 3, 4 : Ctelome, 3 : Digestive organs, 

 5 : Notochord or tesophageal diverti- 

 culum, 4, 6 : Blood-vascular system, 4, 

 6: Nervous system, 4, 5,7: Repro- 

 ductive system, 7 : Development, 7, 8, 

 9 : Metamorphosis, 8, 9 



Baleen, 480*, 568* 



Baleen whales, 480 



Balfour, F. M., 688 



Banded ant-eater, 494 



Bandicoots, 478, 494, 524, 562, 597 



Banks, Sir J., 676 



Barbel, 146 



Barbels, in Teleostomi, 225 



Barbs, of feather, 382* 



Barbules, of feather, 382* 



Barriers, 626 



Barry, Martin, 680 



Basale, 232 



Basalia, of Craniata, 82* 



