LIST OF ILLUSTRATIONS. Xlll 



no. PAGE 



72. Illustrations of characters of Pycnodont Fishes . . .102 



73. Meaturua leedai. Restoration of head and opercular apparatus 103 



74. Meaodon macropterua. Restoration 105 



75. Ettgnathua orthostomiia. Restoration 106 



76. Caturus furcatw. Restoration 107 



77. Eurycormua speciosua. Vertebrae 108 



78. ffypaocormita insignia. Restoration 110 



79. Aapidorhynchua acutirostria. Restoration . . . .112 



80. Leptolepis dubiua. Restoration 115 



81. Rhizodopsia and Peloaaurua. Diagram of cranial roof . .124 



82. Branchiosaurus amblystomua. Restoration of skeleton and 



ventral armour 126 



83. Diagrams of Branchiosaurian and Microsaurian Vertebrae . 127 



84. Diagrams of Pectoral Arch of Stegocephalia . . . .128 



85. Diagrams of Pelvic Arch of Stegocephalia . . . 130 



86. Archegoaaunis decheni. Restoration of skull . . . .134 



87. Hind limb 135 



88. Euchiroaaurua rochei. Rhachitomous vertebra . . .136 



89. Moatodonaaurus gigatiteus. View of occiput . . . .137 



90. Transverse section of sector of Labyrinthodont Tooth . .138 



91. Diagram of the Cranial Roof in a Stegocephalian, various 



Types of Reptiles, and a Bird, showing Modifications in 



the Postero-lateral Region . . . . . .143 



92. Pariaaauma baini. Skeleton 146 



93. Diagram of palate 147 



94. Procolophon trigoniceps. Restoration of skull and pectoral arch 149 



95. Oaleaaurua planicepa. Palatal aspect of skull . . . .151 



96. Cynognathua crateronotua. Skull 153 



97. Tritylodon longcevua. Skull . . . . . . .154 



98. Theriodeamiia phylarchus. Restoration of carpus . . .155 



99. Oordonia traquairi. Restoration of skull . . . .156 



100. Ptychognathua declivia. Occipital view of skull . . . 157 



101. Right Pectoral Arch and Right Pelvic Arch of a Dicynodont 



Reptile ... 158 



102. Diagram of Pectoral Arch of Sauropterygia, showing gradual 



atrophy of clavicular elements 160 



103. Larioaauru-s bolsami. Restoration 162 



104. Restoration of palate . . . .163 



105. Nothosaurua mirobilia. Restoration of skull . . . .165 



106. Diagram illustrating the Principal Characters of the Plesio- 



saurian Reptiles . . . . . . . .166 



107. Cryptoclidus oxonienaia. Immature skeleton .... 168 



108. Pleuroaternum portlandicum. Plastron 172 



109. bullocki. Posterior end of plastron . . .173 



