Abstract
The posterior part of a skull of Stegodon miensis, which was found from Nakajo-mura, Kamininochi-gun, Nagano Prefecture, central Japan in 1970, was prepared for the first time for this morphological study. This revealed canals for nerves and vessels on the inferior and posterior surface of the skull. Comparison of the previously prepared anterior part and this posterior part with skulls of Elephas maximus revealed morphological differences. These differences can be explained by the level of antero-posterior abbreviation of the skull and differences of molar morphology and mode of molar eruption.