xiv LIST OF ILLUSTRATIONS 



FIG. PAGE 



885. Rana development 269 



886. ,, temporaria, stages in life-history . . . 270 

 886 bis. Necturus maculatus .... ..... 275 



887. Siren lacertina . . 275 



888. Amphiuma tridactyla . ... . 275 



889. Salamandra maculosa ... 276 



890. Coecilia pachynema . 277 



891. Urodela, structure of vertebral column 278 



892. Proteus anguiiius, chondrocranium . 279 



893. Salamandra atra, skull 280 



894. Siphonops annulatus, skull 281 



895. Protritoii, skull .... .281 



896. Salamandra and Amblystoma, shoulder-girdle and sternum . . 282 



897. ,, pelvic girdle .283 



898. ,, heart and chief arteries, larva and adult . . . 285 



899. ,, venous system 286 



900. Urodela, diagrams of male and female organs 287 



901. Nototrema marsupium 288 



902. Pipa americana 289 



903. Epicrium glutinosum, larva 290 



904. Amblystoma tigrinum (axolotl) 290 



905. Lacerta viridis 293 



906. Lizard, vertebrae . . 294 



907. Lacerta agilis, skull ... .296 



908. ,, ,, pectoral arch and sternum .... . 299 



909. ,, ,, carpus . . 300 



910. ,, vivipara, pelvis 301 



911. ,, agilis, tarsus 301 



912. , , , , general view of viscera 302 



913. ,, viridis, dissection from ventral aspect 303 



914. Lizard, lateral dissection 305 



915. Lacerta viridis, brain ....... . 307 



916. ,, ocellata, brain and pineal eye 308 



917. ,, Jacobson's organ 309 



918. ,, sclerotic ossicles . . 309 



919. ,, viridis, membranous labyrinth 309 



920. ,, ,, urinogenital organs, male ... . . 310 



921. ,, ,, ,, female . . . 311 



922. Pygopus lepidopus ... 316 



923. Hatteria punctata ..... . 317 



924. Testudo grreca . . 317 



925. Hatteria, vertebra . 319 



926. Python, vertebra . 320 



927. Crocodile, skeleton . . 321 



928. Hatteria ,, . 321 



929. Crocodile, anterior vertebras . 322 



930. Cistudo lutaria, skeleton . . 322 



931. Chelone midas, transverse section of skeleton . . . . 323 



