LIST OF ILLUSTRATIONS. Xlll 



FIG. PAOK 



23 Eight posterior and anterior limbs of a Newt (Molge 



cristata) 148 



24 Dorsal and ventral views of the cranium of a Common Frog 



(Rana temporaria) 155 



25 Dorsal and ventral views of the cranium of a Common Frog 



(Rana temporaria) from which the membrane bones have 

 mostly been removed . . . 157 



26 Lateral view of the skull and posterior view of the cranium of 



a Common Frog (Rana temporaria) 159 



27 Dorsal view of the skull of a Labyrinthodont (Capitosaurus 



nasutus) 176 



28 Ventral view of the cranium, and lateral view of the cranium 



and mandible of Siphonops annulatus .... 178 



29 Visceral arches of Amphibia : A, Molge cristata ; B, Rana 



temporaria, adult; C, Tadpole of Rana; D, Siredon pisci- 

 formis 181 



30 Shoulder-girdle and sternum of an adult male Common Frog 



(Rana temporaria), and of an adult female Docidophryne 

 gigantea 183 



31 A, Eight antibrachium and manus of a larval Salamander 



(Salamandra maculosa); B, Eight tarsus and adjoining 

 bones of Molge sp 186 



32 Lateral and dorsal views of the skull of an Ichthyosaurus . 196 



33 Lateral view and longitudinal section of the skull of a Lizard 



(Varanus varius) ......... 201 



34 Lateral view of the shoulder-girdle of a Lizard (Varanus) . 202 



35 Eestored skeleton of Ceratosaurus nasicornis . . . 206 



36 Dorsal and ventral views of the carapace of a Loggerhead 



Turtle (Thalassochelys caretta) 216 



37 Plastron of a Green Turtle (Ghelone midas) .... 218 



38 The skull of a Green Turtle (Ghelone midas) . . .223 



39 Longitudinal vertical section through the cranium of a Green 



Turtle (Chelone midas) 226 



40 Anterior limb of a young Hawksbill Turtle (Chelone imbri- 



cata), and posterior limb of a large Green Turtle (Chelone 

 midas) 234 



41 The first four cervical vertebrae of a Crocodile (Crocodilus 



vulgaris) 239 



42 Anterior view of a late thoracic and the first sacral vertebrae 



of a Crocodile (Crocodilus palustris) 242 



