INDEX. 



Acadian Group, 79. 



Acer, 308. 



Acervularia, 119, 173. 



Acidaspis, 123. 



Acorn-shells, 2(57. 



Acroculia, 128. 



Acrodus, 214, 242, 2:5; nobilis, 242. 



Acrotreta, 110. 



Acroura, 120. 



Actinocrinus, 175. 



JEglina, 108. 



jEpiornis, 348. 



Agnoatus, 85-87, 108 ; res, 85. 



Atces malchis, 354. 



.4tecto, 108. 



Alethopteris, 136, 165, 196. 



^4 &7? (see Sea-weed s). 



Alligators, 218, 297. 



Alnus, 262. 



Amblypterus, 188; macropterus, 188. 



Ainbonychia, 111. 



Ammonites. 187, 212-214, 237-239. 272; 

 Humphresianu*, 238 ; bifrons, 238. 



Ammonitidce, 239, 272, 285, 294. 



Amphibia, 189 ; of the Carboniferous, 

 189-191 ; of the Permian, 200 ; of the 

 Trias, 215-217 ; of the Jurassic, 242; of 

 the Miocene, 313. 



Amphicyon, 322. 



AmphUestes, 253. 



Amphinpongia, 118. 



Amphistegina, 311. 



Amphitherium, 253 255; Prevostit, 254. 



Amphitragulus, 317. 



Amplexus, 173 ; coralloides, 174. 



Ampyx, 108. 



Ananchytes, 266. 



Anchitherium, 301, 302. 



Ancyloceras, 272, 273; Matkeronianut. 

 273. 



Ancylotherium Pen*elici, 315. 



Andrias Scheachzeri, 313, 314. 



Angiosperni, 261, 2(32. 



Animal Kingdom, divisions of, 375-378. 



Anisopus, 206. 



-4wne2irfa, of the Cambrian period, 82, 

 83 ; of the Lower Silurian, 107 ; of the 

 Upper Silurian, 122, 123 ; of the De- 

 vonian, 143, 144 ; of the Carboniferous, 

 178. 



Antntlaria, 137, 196, 207. 



Anomodontia, 220. 



^1 noplotlieridce, 302. 



Anoplotherium, 302, 303 ; cownwne, 303 



Ant-eaters, 299, 315, 349. 350, 353. 



Antelopes, 317. 



Anthracosanrus Ritsselli, 190. 



Anthrapalcemon gracilis, 180. 



Antilocapra, 318. 



Antilope quadricornis, 318. 



Antwerp Crag, 325. 



Apes, 323. 



Apiocrinus, 231. 



Apteryx, 346, 348. 



Aqueous rocks, 15 



Arachnida of the Co.nl-measures, 181. 



Aralo-Caspian Beds, 3*6. 



vlmttcaria, 2fi2. 



Araucarioxylon, 170. 



^4rca, 198; antiqua, 199. 



Archceocidaris, ITS. 



Archceocyathus, 82. 



Archoeopteryx, 252, 281; macrnra, 252, 



253. 



Archceosphcerince, 75 

 Archimedes, 184; Wortheni, 183. 

 Archiulus, 182. 



Arctic regions, Miocene flora of, 310. 

 Arctocyon, 3('4. 

 Arenaceous rocks, 20. 

 Arenicolites, 83 ; didi/mus, 88. 

 Arenig rocks, 92, 94. ' 

 Argillaceous rocks. 20. 

 Armadillos, 299; 351, 353. 

 Artiodactyle Ungulates, 300, 317. 

 Asaphus, 108; tyrannas, 107, luS. 

 ^.s'coceras, 130. 

 Aspidella, 76. 

 Aspidura loricata, 210. 

 Astarte borealis, 338. 

 Asterophyllites, 137, 19(5. 

 Asterosteus, 152. 

 Astrceidas, 231. 

 Asfrceospongia, 118, 139. 

 Astylospongia, 98 ; prcenwrsa, 98. 

 Athyris, 110, 127, 147, 198 ; subtilita, 185. 

 Atlantic Ooze, 22, 23. 

 Atrypa, 127; congesta, 127; hemisphce- 



rica, 127 ; reticularis, 147, 148. 

 Auger-shells, 293. 

 Aurochs, 356. 

 Aves (.s-ec Birds). 



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