ILLUSTRATIONS. 



(ii'RE 71. Skull (.if Ilyrdchyns liairdianus, with l)r;iin-c.-i.st in position,.. ' 64 



" '72. Skull of Aini/ii.odi»i adueiLus, with brain-t^ast in position, . 64 



" 73. Skull of Eporeodon sacialis, with brain-cast in position, , . 64 



" 74. Skull of i?/(^s;offo/i .^dmer«ca^(2<s, with brain-cast in position, 65 



" 75. Skull of jEVfj/Aerii^i/w <;r«s»''(wi, with brain-cast in position, 05 



" 76. Skull of Flatygomis compressus, with brain-cast in position, . 05 



" 77. Skull of Elephiis Jiidicus, with brain-cast in position, 66 



" 7S. Skull of Tapirus terreslris, with brain-cast in position, . 66 



" 79. Skull of Rhinoceros Siimatreiisis, with brain-cast in position, . . 06 



" 80. Skull of Aachenia vicugna, with brain-cast in position, 67 



" 81. Skull of Ceryws Fi!V^J«/«;«<s, with brain-cast in position, 07 



" 82. Skull of Hippopotamus amphihius, with brain-cast in position,.. .... 67 



" 83. Skull of Z>*6'o^yfes ?or<^««/(^s', with brain-cast in position, . 67 



CHAPTER V. 



Figure 84. Atlas of Tinoceras rjrande; front view, 71 



" 85. The same vertebra; back view, 71 



'' 86. The same vertebra; bottom view, .. 71 



'' 87. Fourth cervical vertebra of Tinoceras grande; front view, . 75 



'' 88. The same vertebra; side view, . . . _ 75 



89. Fifth cervical vertebra of Dinoceras niirahile; front view, 76 



" 90. The same vertebra; side view, 76 



91. Sixth cervical vertebra of Z'wiOCtJrrw w/Z/'^iZ/e," back view, 77 



■' 92. The same vertebra; side view, 77 



" 93. Sixth cervical vertebra of 7>/»ocerc^s (•««««;»/ front view, 77 



" 94. The same vertebra; side view, 77 



CHAPTER VI. 



FiGDKE 95. First dorsal vertebra of Dinoceras nurahih; front view, 80 



" 96. The same vertebra; side view, 80 



" 97. First dorsal vertebra of Tinoceras anccps' front view, 80 



'■ 98. The same vertebra; side view, .. .. 80 



99. Second dorsal vertebra of Z>«H,ot'errts ?H/rai/7e; front view, . 82 



" 100. The same vertebra; side view, 82 



" 101. Third dorsal vertebra of Uintatlieriuin scgne; iront v\q\\',- 83 



" 102. The same vertebra; side view, .. 83 



" 10:i. Posterior dorsal vertebra of Dinoceras lucare; front view, 84 



" 104. The same vertebra ; side view, ... : . . 84 



" 105. The same verteEra; back view, 84 



