124. Land-snail (_Pupa vetusta_, Dn.) 143 125. Land-snail (_Zonites_ (_Conulus_) _priscus_, Carpenter) 143 126. Millipedes (_Xylobius sigillariæ_, Dn.; _Archiulus Xylobioides_, Scudder; _X. farctus_, Scudder) 145 127. Wings of Cockroaches 146 128. Wing of May-fly (_Haplophlebium Barnesii_, Scudder) 147 129. A Jurassic Sphinx-moth (_Sphinx Snelleri_, Weyenburgh) 148 130. An Eocene Butterfly (_Prodryas persephone_, Scudder) 149 131. Abdominal part of a Carboniferous Scorpion 150 132. Carboniferous Scorpion (_Eoscorpius carbonarius_, Meek and Worthen) 151 133. Footprints of one of the oldest known Batrachians, probably a species of _Dendrerpeton_ 152 134. _Archegosaurus Decheni_ 154 135. _Ptyonius_ 154 136. A large Carboniferous Labyrinthodont (_Baphetes planiceps_, Owen) 155 137. _Baphetes planiceps_ (Owen) 156 138. A lizard-like Amphibian (_Hylonomus aciedentatus_) 157 139. _Stelliosaurus longicostatus_ (Fritsch) 158 140. Section showing the position of an erect _Sigillaria_, containing remains of land animals 160 140_a_. Section of base of erect _Sigillaria_, containing remains of land animals 161 _Frontispiece._ Inhabitants of the English Seas in the Age of Reptiles 164 141. Arm of _Proterosaurus Speneri_ 166 142. Skeleton of _Ichthyosaurus_ 167 142_a_. Head of _Pliosaurus_ 168 142_b_. Paddle of _Plesiosaurus Oxoniensis_ 168 143. Skeleton of _Clidastes_ 170 144. An Anomodont Reptile of the Trias (_Dicynodon lacerticeps_, Owen) 170 145. A Theriodont Reptile of the Trias (_Lycosaurus_) 170 146. Skeleton of _Pterodochylus crassirostris_ 170 147. Restoration of _Rhamphorhyncus Bucklandi_ 171 148. A Jurassic bird (_Archæopteryx macroura_) 172 149. Jaw of a Cretaceous Toothed Bird (_Ichthyornis dispar_) 173 150. Jaw of _Bathygnathus borealis_ (Leidy) 174 151. _Hadrosaurus Foulkii_ (Cope) 175 152. Jaws of _Megalosaurus_ 176 153. Tooth of _Megalosaurus_ 177