Recently I1 studied the records of 464 cases of cutaneous cancer which arose from the eyelids, from the conjunctiva or from both. Of the carcinomas in this series, 230 were examined and graded histologically ; others, for one or another reason, were not. About 60 per cent of the 230 growths, actually 139 of them, were basal cell epitheliomas, and approximately 14 per cent, or 32 of them, were mixed basal cell and squamous cell epitheliomas. This paper is primarily concerned with these two groups, composed respectively of 139 and of 32 tumors. ETIOLOGY Whereas the majority of the pure basal cell epitheliomas occurred in persons in the sixth decade of life, the majority of the mixed cell epitheliomas occurred in those in the fifth decade. Men were affected in 61.1 per cent of the cases of basal cell epithelioma and in 65.6 per cent of the