Since 1923 we have had under our care a patient with an example of what was to us a unique case of pemphigus, although this diagnosis was reached only after a long period of observation. We have seen four similar cases during the past six years, three of these in patients of Dr. O. S. Ormsby and one in a patient at the Barnard Skin and Cancer Hospital, St. Louis, in the service of Drs. Engman and Mook. In addition, we have been able to collect six cases from the various society transactions recorded in theArchives of Dermatology and Syphilology. Of these eleven cases, all but one have been shown at meetings of dermatological societies, and in every instance they have excited considerable discussion and difference of opinion as to their proper classification among dermatoses. We have been unable to find a description of this eruption in the literature,