At a meeting of the New York Dermatological Society, May 25, 1920, attended by all but one of the members, I presented a patient for the diagnosis of a curious and complex dermatosis, with which I was unfamiliar. The eruption consisted of telangiectases, petechiae, pigmentation, atrophy and ulceration. No similar case has been seen by any of the dermatologists present, but Dr. Fred Wise suggested the diagnosis of poikiloderma atrophicans vasculare and compared the appearance of the lesions of the patient with the cuts of the first case reported under that name by Jacobi. This diagnosis was confirmed by the study of previously reported cases of that dermatosis, of which twelve have been found, nine in the German, two in the French, and one in the Russian literature. The reported cases vary to a considerable extent in many details, but the predominant characteristics common to all are: redness, caused by