抄録
The brain parenchyma of Salamandrella keyserlingii Dybowski (SKD) is not vascularized except in the olfactory bulb. In the brains of SKD, neuronal and glial perikarya are seen densely aggregated at the periventricular regions and no blood vessels enter the brain parenchyma from the meningeal vessels. Former investigators have discovered no blood vessels in the brains of nine species of salamanders in the Hynobiidae, all of which inhabit Japan. This report adds one more avascular species of salamander which is found in Hokkaido, Japan. The reasons why the brain of Hynobiid salamanders is not vascularized and why only the olfactory bulbs are vascularized cannot be speculated on at the present time.
