The glomus tumor has already been described in the American literature of surgery (Adair1) and of pathology (Popoff2). It has received more general attention in The Journal of the American Medical Association.3 Recently Stout4 has described it thoroughly for the oncologists. It is therefore superfluous to repeat the details of the subject, however desirable they might be for the fullest understanding of the circumstances attending our case. In brief, the neuromyo-arterial glomus is a normal vascular anastomosis which is distinctive in two respects: (1) it is arteriovenous, i. e., there are not any intervening capillaries, the structure having a special and peculiar architecture, and (2) it includes special arrangements of muscle and nerve tissue. It occurs almost exclusively, as known at present, on the extremities, both upper and lower. It is supposed to play an important part in heat regulation. It assumes dermatologic