Abstract
1. The abducens nucleus, the pyramidal tract and the vestibular nucleus of a vampire bat and a greater horseshoe bat show an arrangement more resembling birds rather than other members of mammalia.
2. These organs of a tuber-nosed bat and kalong are almost identical with other non-chiropteral mammalia in their positions and development.
3. The olivary nucleus takes precedence over the pyramidal tract in all the four specimens of bats studied.
