244 HENRY LAURENS 



The paraphysis, which is much larger and more conspicuous 

 than the epiphysis, has a wall of a single layer of cells and a 

 large irregular cavity with branching tubules with which the 

 blood vessels of the choroid plexus are in intimate relation. 



J' ' :«*-*J 



Fig. 3 Theanterior end of a sagittal section of an 8.0 mm. larva. £■., epiphysis; 

 P., paraphysis; V., velum. 



These figures also serve the purpose of showing that the epiphy- 

 sis, as in other Urodeles, is relatively poorly developed in Ambly- 

 stoma and moreover that there is no pineal or parietal organ 

 or eye. The paraphysis on the other hand reaches a high degree 

 of development and with the surrounding blood vessels can be 

 seen through the skin and brain case of the larvae, particularly 



