xii ILLUSTRATIONS 



FIG. PAOB 



23. Prox furcatus. Left antler 160 



24. A. Left fore-foot of the Bed Deer 162 



B. Left fore-foot of the Roe 162 



C. Second row of tarsals and metatarsals of Gelocus . 162 

 !. Left fore-foot of Hyaemoschus aquaticus . . . Ids 



B. Left fore-foot of Hyopotamus 108 



26. Skull of a Short-horned Bull 17o 



27. Skull of the Gazelle . . . . . . . 17i; 



28. Skull of the Bison americanus 180 



29. Skull of the Anoa 181 



30. Skull of Cainotherium metopias 183 



31. Skull of the Tapir (Tapirus americanus) . . .191 



32. Back molar, below to the left, of Lophiodon parisi- 



ensis . . 192 



33. Skull of Elasmotherium 197 



34. A. Skull of Brontotherium ingens 199 



B. The same from above with a drawing of the brain . I'.i'.t 



35. Palseotherium. Hipparion. Horse . . . . 202 



36. Left hind-foot of Anchitherium .... 



37. Right upper cheek-tooth of the Horse . . . . 209 



38. Foot of the fossil Horses of North America . . . 213 



39. Macrauchenia patagonia 229 



40. Polished molar of Mastodon angustidens . . . 232 



41. Portion of a cheek-tooth of Mastodon elephantoides . 233 



42. Portion of a cheek-tooth of the Mammoth, polished 



sideways 



43. Skull of Dinotherium giganteum 237 



44. Skull of Dinoceras mirabile _> 1 1 



45. Skull of the Delphinus lagenorhynchus, Gray . . . --'in 



46. Right fore-leg of Delphinus delphis . . . . _'~.o 



47. Tooth of Squalodon 253 



48. Teeth of the Fox -_v.l 



49. Lower jaw of Icticyon 



50. Skull of Tillotherium fodiens, from above . . .286 



51. Foetal teeth of the Greenland Seal 290 



