LIST OF ILLUST11ATIONS XV11 



Diagram of the arterial arches of Ceratodus viewed from 



the ventral side . 505 



Diagram of the venous system of a Dipnoan ... 507 

 Lateral view of the skeleton of Ceratodus miolepis . . -508 

 Dorsal and ventral views of the cranium of Ceratodus 



miolepis .......... 510 



Skeletons of the anterior and posterior limbs of a Newt, 



Molge cristata 520 



Skeleton of Triton, Molge cristata, seen from the side . 522 

 Male and female specimens of Molge cristata . . . 525 

 Diagram illustrating three stages in the development of 



the vertebral column of an Opisthocoelous urodela . 526 

 Dorsal, ventral and lateral views of the skull of Molge 



cristata .......... 529 



Visceral arches of Molge cristata. . . . . . 531 



Ventral and lateral views of the pectoral girdle and sternum 



of Molge cristata 532 



Skeletons of (a) right fore-arm and hand of the Salamander, 



Salamandra maculosa, and (6) the right ankle of the Newt, . 



Molge cristata . . . . . . . . 533 



Pelvic girdle of Molge cristata . . , . . . 533 

 Dissection of a male Molge cristata . . . . . 534 



Diagram of .the venous system of a .Urodele . . . 536 

 Diagram of the arterial arches of Molge . . . . 537 



Dorsal view of the brain of Molge cristata . . . 538 

 Excretory and reproductive organs of a female Molge cristata 539 

 Excretory and reproductive organs of a male Molge cristata 540 

 Larva of Triton, Molge cristata ...... 541 



Diagrams illustrating the development of the procoelous 



vertebral column in Anura . . 546 



Dorsal and ventral views of the cranium of the common Frog, 

 ^jRana temporaria, from which the membrane bones have 



mostly been removed . . . . . . . ^ 547 



Dorsal and ventral views of the cranium of Rana temporaria 548 

 Lateral view of the skull and posterior view of the cranium 



of Rana temporaria . . . . . . . . 549 



Visceral arches of (a) Rana temporaria, adult, (6) Tadpole 



of Rana . .. . ' ... . .. . ... . 550 



Shoulder-girdle and sternum of (a) an old male specimen 



of Rana temporaria, (6) . an adult female Docidophryne 



gigantea . . . . . . . . . 551 



Diagram of arterial arches of a Frog viewed from the 



ventral aspect ......... 552 



Dorsal view and dissections of the heart of a Frog . . 553 

 Dorsal view of the brain and spinal cord of a Frog . . 554 



