340 THE TRANSFORMATIONS OF THE ANIMAL WORLD 



Ancylotherium, 236 



Ancylus, 228 



Angara (Suess's supposed con- 

 tinent), 295, 298 



Animal Kingdom, Table of, 

 Plate II 



Annelids, possible ancestors of 

 Vertebrates, 50, 86 



Anodonts, 271 



Anoplothenum, 7, 29, 311 



Antedon, 115, 117 



Antelopes, Gaudry on horns of, 



9i 



Anthracosaurus, 198 

 Anthracotherides, 175 et seq., 



317 



Anthracotherium magnum, 236 

 Anthropoid Apes (Gorilla, 



Chimpanzee, etc.), 40, 56 

 Anthropoid stage of Haeckel,56 

 Antlers, 104 



Apes, Filhol and Gaudry on, 59 

 Gaudry on their origin, 154 



Haeckel on, 54 



Lamarck on, 30, 32 



separation of into two groups , 



39 



Arachnids, first appearance of 

 air-breathers (Scorpions) in 

 the Silurian period, 321 



in the Carboniferous period, 



94 



note on, 31 

 Area, 262, 326 

 Archcsocidaridtz, 233 

 Archcsopteryx, link between 



Reptiles and Birds, 74, 95, 

 113, 232 



structure, 249 

 Archegosaurus, 255 

 Archellenis (of Ihering), 309 

 Arciferi, the, 80 



A rctocyonidee, 311 



ArenicolitcB, 326 



ArietitcB (Ammonites), 159,166, 



196, 229, 236, 260 

 Aristosuchus, 300 

 Arnioceras, 261 

 Arthropods, 46, 49, 326 



Articular bone of fishes, 87 



of Reptiles, Birds, and 

 Batrachians, 88 

 Ascidians, Darwin on, 41 



Kowalevsky on, 86 

 Ass, the, 73 



Astarte borealis, 287 



Asterias, 326 



Asterida, 49 



Athecae, the, 220 



Atrophy of organs, Lamarck 



on, 25 

 Axolotl, the, 55 



BACILLI, 222 



Bactvites, 241 



Baculince, 214 



BaculitcB, the, 215, 229 



Baivdia, 164 



Balana, 37, 217 



Barramundi ( Dipneuston ) allied 



to Ceratodus of Trias, 170 

 Batrachians (Frogs, etc.), Cope 



on transitions of, 80 



Lamarck on, 3 1 



origin of, 84 



Bats, 54 



Bears, supposed ancestry of, 



105 



Belemnites, 97, 102 

 Bellerophon, 94 

 Belenuridae, 117 

 Beloder (Triassic crocodilian), 



299 



Belodon, 300 

 Beltina Danai, 331 

 Beryx, origin in Cretacedus 



period, 170 

 Birds derived from Reptiles, 74 



Lamarck on origin of, 3 1 

 Bison, extinction of the, 234 

 Blastoids, the, 71 

 Blastomeryx, 314 



Bones, development of, 87-9 

 Boscovicia (fresh-water Mol- 

 lusc), 272 



Bostrychocerata, 215 

 Bothriceps, 303 

 Bovidae, the (oxen, etc.), 101 



