The tuber of vermis, the most posterior division of the inferior vermis, is of small size, and laterally spreads out into the large inferior semilunar lobules, which comprise at least two-thirds of the inferior surface of the hemisphere.
Cerebellum. Superior surface.
Cerebellum. Inferior surface.
This article incorporates text in the public domain from page 790 of the 20th edition of Gray's Anatomy (1918)