As the term epidermophytosis seemed about to supplant the ancient titles (White, the author, and others), workers demonstrated that the tricophytons are the majority of the offenders, with others of the higher fungi (Wende-Collins) capable of producing disease. The term tinea, defined worm, was employed as far back as 1829 and has continued to cover several different dermatologic conditions. Tricophytosis, for years, and epidermophytosis, of late, bade fair to break the reign of tinea, but now we must coin a new name. Taenia means tapeworm; tinea, any worm. While investigators seem not to have complied with Koch's law, the presence of these fungi, with resistance and recurrence of disease induced, as well as the usual sources and methods of infection, leaves little doubt of their pathogenicity. As to the distribution of this class of disease, it is at least universal, almost pandemic, among men; and for the simplest of reasons.