[The significance of theramus palatinus to the development of the vomerine bar inSalamandra salamandra (L.)].

The influence of theramus palatinus (VII.) and the postion of the vomer on the vomerine bar, which develops during metamorphosis, was studied by various amputation procedures. Cutting off the nerve cord does not prevent the development of the vomerine bar, as the nerve soon regenerates, whereas cutting off and displacement as well as the removal of portions of theramus palatinus do prevent development. Removal of portions of the nerve cord during metamorphosis produces only parts of the vomerine bar. Obviously an intact ramus palatinus is necessary for the outgrowth of the novel osseous vomerine bar. The course of this outgrowth is independent of the position of the larval vomer.