X 
LIST OF ILLUSTRATIONS IN TEXT. 
FIG. PAGE 
80. Mouth of Ceratodus forsteri ... . . . .78 
81. Restoration of Coccosteus decipiens, from the Middle Old Red 
Sandstone of Scotland. (After A. S. Woodward) . . 79 
82. Jaws of Dinichthys, from the Upper Devonian of Ohio, 
U.S.A.79 
88. Homosteus milleri , from the Middle Old Red Sandstone of 
Caithness. (After R. H. Traquair) .... 80 
84. Restoration of Holopty chius flemingi , from the Upper Old 
Red Sandstone of Scotland. (After R. H. Traquair) . 82 
85. Transverse section of Holoptychian (Dendrodont) Tooth. 
(After C. H. Pander) ....... 82 
86. Restoration of Osteolepis macrolepidotus, from the Middle 
Old Red Sandstone of Scotland. (After R. H. Traquair) . 88 
87. Tooth of Strepsodus sauroides , from the British Coal 
Measures ......... 83 
88. Restoration of TJndina ( Holophagus ) gulo , from the Lower 
Lias of Lyme Regis. (After A. S. Woodward) . . 84 
89. Scales of Elonichthys striatus, from the Lower Carboni¬ 
ferous of Scotland ....... 85 
90. Restoration of Palceoniscus macropomus , from the Upper 
Permian of Germany. (After R. H. Traquair) . . 85 
91. Restoration of Eurynotus crenatus , frpm the Lower Car¬ 
boniferous of Scotland. (After R. H. Traquair) . . 86 
92. Restoration of Platysomus striatus , from the Upper Per¬ 
mian of Europe. (After R. H. Traquair) ... 86 
93. Restoration of Chondrosteus acipenseroides, from the Lower 
Lias of Lyme Regis. (After A. S. Woodward) . . 87 
94. Skeleton of existing Sturgeon, Acipenser .... 88 
95. Dapedius politus, from the Lower Lias of Lyme Regis . 90 
96. Lepidotus mantelli , from the Wealden of Sussex . . 90 
97. Parts of the skeleton of Pycnodonts . . . . .91 
98. Restoration of Eugnathus orthostomus, from the Lower 
Lias of Lyme Regis. (After A. S. Woodward) . . 92 
99. Restoration of Caturus furcatus, from the Lithographic 
Stone of Bavaria. (After A. S. Woodward) ... 92 
100. Restoration of Hypsocormus insignis, from the Lithographic 
Stone of Bavaria. (After A. S. Woodward) . 93 
101. Restoration of Aspidorhynchus acutirostris, from the 
Lithographic Stone of Bavaria. (After A. S. Woodward). 93 
102. Restoration of Leptolepis dubius, from the Lithographic 
Stone of Bavaria. (After A. S. Woodward) . . .95 
103. Skeleton of existing Common Perch, Perea Jiuviatilis . 95 
104. Cycloid and ctenoid scales ...... 96 
105. Restoration of Diplomystus brevissimus, from the Upper 
Cretaceous of Mount Lebanon. (After Pictet and Hum¬ 
bert) .......... 97 
106. Capelin (Mallotus villosus ) in nodule of Glacial Clay, 
Greenland ......... 97 
107. Restoration of Eurypholis boissieri, from the Upper 
Cretaceous of Mount Lebanon. (After Pictet and Hum¬ 
bert) .......... 98 
108. Restoration of Sardinioides crassicaudus , from the Upper 
Cretaceous of Westphalia. (After A. S. Woodward) . 98 
