No. 2.] 
Fic. 61. 
THE HARD PARTS OF THE MAMMALTA. 
. 
Smilodon neogeus, skull; original. 
277 
Fic. 62. Pantolambda bathmodon, superior molars, “vertebrze, and bones of hind 
foot; original. 
Fic. 63. 
Fic. 64. 
Fic, 65. 
Fic. 66. 
Fic. 67. 
Fic. 68. 
Fic, 69. 
FIG, 70. 
Fic. 71. 
FIG. 72. 
Fic. 73. 
Fic. 74. 
FIG. 75. 
Fic. 76. 
FIG. 77. 
Fic. 78. 
FIG. 79. 
Fic, 80. 
Fic. 81. 
Fic. 82. 
Fic, 83. 
Fic. 84. 
Fic. 85. 
Fic. 86. 
Fic. 87. 
Fic. 88. 
Fic. 89. 
FIG. go, 
FIG. 91. 
FIG. 92. 
FIG. 93. 
Lctacodon cinctus and Metalophodon testis, superior molars; original. 
Molars of Coryphodontide in relation, diagram; original. 
Coryphodon latidens, mandible; original. 
Uintatherium leidianum, molars; from Osborn. 
Uintatherium, lower jaw; from Osborn. 
Phenacodus primevus, diagram of molars in relation; original. 
Molars of M/ammadiia in functional relation; from Osborn. 
Quadritubercular and quinquetubercular molars in relation; from Osborn. 
Transverse sections of molars of Artiodactyla ; from Gaudry. 
Transverse sections of molars of Prodoscidea ; from Gaudry. 
Transverse sections of jaws of Rodentia ; from Ryder. 
Posterior parts of lower jaws; from Ryder. 
Paths of lower jaws in mastication; from Ryder. 
Dentition of Cervus, from Ryder. 
Premolar teeth, different types; from Ryder. 
Selenodont molars, both jaws, mutual relation; from Ryder. 
Lyracotherium venticolum, molars of both jaws, mutual relation; original. 
fHyrachyus agrestis, superior molars from below; from Leidy. 
Symborodon trigonocerus, molars; original. 
Protapirus priscus, molars; from Filhol. 
Anchitherium equiceps, molars, mutual relations; original. 
Psittacothertum multifragum, lower jaw; original. 
Calamodon simplex, lower jaw; original. 
Castoroides ohioensis, skull; from Hall and Wyman. 
Castoroides ohioensts, skull from below; from Hall and Wyman. 
Ischyromys typus Leidy, skull; original. 
fydrocherus esopi Leidy, molar tooth; from Leidy. 
Molars of Rodentia, Delphinus, and Cervus; from Ryder. 
Chirox plicatus, superior molars; original. 
Polymastodon tacénsts, molars and lower jaw; original. 
Multituberculata, dentition; original, 
