xiv LIST OF ILLUSTRATIONS 



FIG. PAGE 



939. Rana esculenta, muscles . . . 267 



940. Rana temporaria, dissection from left side 268 



941. esculenta, digestive organs 269 



"942. temporaria, heart 270 



943. arteries 272 



944. veins 273 



945. ,, course of blood and lymph, diagrammatic . . 275 



946. ,, esculenta, brain 276 



947. accessory auditory apparatus 277 



948. esculenta, urinogenital organs, male 278 



949. ,, female 279 



950. development 281 



951. temporaria, stages in life-history 282 



952. Necturus maculatus . . . 286 



953. Siren lacertina 286 



954. Amphiuma tridactyla 286 



955. Salamandra maculosa 287 



956. Ccecilia pachynema 288 



957. Urodela, structure of vertebral column 290 



958. Proteus anguinus, chondrocranium 291 



959. Salamandra atra, skull 292 



960. Ichthyophis glutinosa, skull . . 292 



961. Protriton, skull 293 



962. Salamandra and Amblystoma, shoulder-girdle and sternum . . 294 



963. pelvic girdle 295 



964. ,, heart and chief arteries, larva and adult . . . 296 



965. maculosa, venous system 297 



966. Urodela, diagrams of male and female organs 299 



967. Nototrema marsupiatum 300 



968. Pipa americana 300 



969. Ichthyophis glutinosa . 301 



970. Amblystoma tigrinum (axolotl) 301 



971. Lacerta viridis 304 



972. Lizard, vertebrae . 306 



973. Lacerta agilis, skull , . 308 



974. ,, pectoral arch and sternum 311 



975. carpus 311 



976. vivipara, pelvis 312 



977. agilis, tarsus 313 



978. ,, general view of viscera 314 



979. viridis, dissection from ventral aspect 315 



980. Lizard, lateral dissection 317 



981. Lacerta viridis, brain 318 



982. vivipara, brain of an embryo . . . ' . . . . 319 



983. Jacobson's organs 320 



984. sclerotic ossicles 321 



985. ,, viridis, membranous labyrinth 321 



986. urinogenital organs, male 322 



