XX 



LIST OF ILLUSTRATIONS. 



145. .Spines and Teeth of Pa- 



. lasozoic Elasmobranchii, 379 



146. ffyla leucotcznia, . . . 382 



147. Proteus anguinus, . . 385 



148. Axolotl, 386 



149. Triton cristatus, . . .387 



150. Skeleton of the Frog, . 388 



151. Development of the Frog, 389 



152. Footprints of a Labyrin- 



thodont, 391 



153. Skull of a Serpent, . . 395 



1 54. Diagram of the circulation 



in Reptiles, .... 396 



155. Skeleton of Tortoise, . 399 



156. Hawk's-bill Turtle, . . 400 



157. Eye of Serpent and Head 



of Viper, 403 



158. Head of Ringed Snake, of 



Viper, and ofBlindworm,4O7 



159. Iguana, 408 



160. Blind-worm, .... 410 



161. Head of Chameleon, . 412 



162. Skull of Crocodilus bi- 



porcatus, 414 



163. Ichthyosaiirus communis, 417 



164. Plesiosaunts dolichodeirus, 418 



165. Pterodactylus brevirostris, 419 



1 66. Quill-feather, .... 425 



167. Skull of Spur - winged 



Goose, 428 



1 68. Pectoral arch and fore- 



limb of Penguin, . . 429 



169. Fore-limb of Jer-falcon, . 430 



170. Hind-limb of Loon, . . 432 



171. Digestive System of the 



Common Fowl, . . . 434 



1 72. Lung of Goose, . . . 436 



173. Foot of Cormorant and 



Beak of Goose, . . . 444 



174. Leg of Curlew, Head of 



Snipe, and Beak of 

 Avocet, 448 



175. Foot of Ostrich, and 



Breast-bone of Emeu, . 45 1 



176. Foot of Fowl, and Head 



of Guinea-fowl, . . . 454 



177. Foot of Woodpecker, and 



Head of Love-bird, . . 458 



178. Feet and Heads of Inses- 



sores, 459 



i?9. Head of Bullfinch, . .461 

 1 80. Foot of Peregrine Falcon, 



and Head of Buzzard, . 464 



181. 



182. 

 183. 

 184. 



185. 

 1 86. 



187. 

 188. 



190. 

 191. 

 192. 



193- 

 194. 



196. 

 197. 

 198. 



199. 



200. 



201. 



2O2. 

 20 3 . 

 204. 

 205. 

 206. 

 2O7. 

 208. 

 209. 

 210. 



211. 



212. 



2I 4 . 



215- 

 216. 

 217. 

 218. 



219. 

 220. 



Foot of Tawny Owl, and 



Head of White Owl, . 465 

 Head of Vulture, . . . 466 

 Archceopteryx macrura, . 467 

 Fore-limbs of Horse and 



Deer, 476 



Teeth of Chimpanzee, . 480 

 Ornithorhynchus para - 



doxus, 490 



Pelvis of Kangaroo, . . 492 

 Dentition of Thylacimis 



and Hypsiprymnus, 



494 

 497 

 499 

 500 



53 

 505 



Myrmecobius fasciatus, . 



Hand of three-toed Sloth, 



Chlamyphorus tmncatus, 



Dugong, 



Skull of Right Whale, . 



Diagram of Baleen-plates 

 of a Whale, . . . 



PJiyseter macrocephalus, 



Delphimts delphis, 



Feet of Ungulata, . . 



Head of Two - horned 

 Rhinoceros, . . . .514 



Stomach of a Sheep, . . 519 



Skull of hornless Sheep, 



Skull of the Indian Ele- 

 phdnt, 



Skull of Deinotheritim, 



Feet of Carnivora, 



Phoca grcenlandica, . 



Skull of the Walrus, 



Skull of Jackal, . . 



Skull of Lion, . . . 



Skull of Beaver, . . 



Skeleton of Fox-bat, . . 



Head of Vampire-bat and 

 Fox-bat, 



Skull of Hedgehog, . . 



Skulls of Orang and Eu- 

 ropean adult, .... 



Jaw of Dromatherium, . 



Jaws of Phascolotherium t 

 Triconodon, Amphithe- 

 rium, and Plagiaulax, . 561 



Skull of Diprotodon, . .563 



Skeleton of Megatherium, 563 



Glyptodon clavipes, . .564 



Skeleton viMegaceros Hi- 

 bernicus, 566 



Skeleton of Mastodon, . 567 



Skeleton of Mammoth, . 567 



507 

 509 

 5io 

 512 



520 



528 

 530 

 53i 

 532 

 533 

 539 

 540 

 542 

 547 



548 

 550 



557 



