Continuous rhythmic myoclonic movements of the palate and pharynx have evoked considerable interest recently in France under the stimulus of Foix,1and his pupils have continued the work so lamentably cut short, as witnessed by the thesis of Gallet2and the careful anatomic investigations of van Bogaert. Leshin and Stone's3recent report covers particularly the German and the English literature, but contains only six cases in which necropsy was performed. Foix believed that he had found the specific lesion underlying the condition, namely, destruction of the central tegmental fasciculus in the pons, but the studies of Klien4and more recently of van Bogaert and Bertrand5have thrown some doubt on the constancy of this lesion. These authors and others have incriminated the dentate nucleus of the cerebellum. In both conditions, however, there is an accompanying hypertrophic degeneration of the inferior olive, a lesion that has