In alert albino rabbits, the cerebellar flocculus was mapped for the effect of its local stimulation upon eye movements. Stimulation through a glass pipette electrode placed in a relatively rostral area induced abduction of the ipsilateral eye. That in a relatively caudal area resulted in a downward movement of the ipsilateral eye, accompanied by an upward movement of the contralateral eye. Intorsion of the contralateral eye was also evoked from a relatively dorsal area. These results indicate that Purkinje cells connected with different components of the vestibulo-ocular reflex arc have a differential localization within the flocculus.