xxii STORY OF THE AMPHIBIANS 



PAGE 



Skull of Rana esculenta 53 



Slab of sandstone, with amphibian footprints ... 59 



Jaw of Dendrerpeton acadeannm 60 



Section of hollow stump filled with sandstone ... 60 



Archegosaurus 61 



Ptyonius 61 



Limnerpeton laticeps 61 



Mastodonsaurus Jaegeri 62 



Trematosaurus 63 



Section of tooth of lal)yrinthodont 63 



Serpent 72 



Lizard 72 



Crocodiles 73 



Tuatera 73 



Foot of a chameleon 75 



Glass-snake . . . ^ 78 



Spine-tailed lizard 81 



Sea-snake 82 



Whip- or tree-snake 83 



Shield-tail snake 84 



Pterodactyl 85 



Ramphorhynchus . 86 



Action of crocodile's jaw . . . . . . .88 



Dasypeltis-unicolor swallowing fowl's egg .... 91 



Dicynodon lacerticeps 92 



Lycosaurus 92 



Rhynchosaurus 93 



Skull of rattlesnake 94 



Anolis or American chameleon 96 



Horned toad 102 



Head of leguan 104 



