Analysis of changes in dermatomycetes incidence in Bashkiria in 1979-1987 has shown the predominance of zoophilic fungi in the latest 9 years, while the share of anthroponotic fungi has made up but 8.6%. The major agent of dermatophytosis in the republic was Microsporum canis. The incidence of Trichophyton verrucosum and Trichophyton mentagrophytes v. gypzeune has grown of late, this necessitating the detection of new epidemiologic factors, contributing to dissemination of these mycoses and the development of appropriate prophylactic measures.