1.The first case of tinea imbricata in Guatemala is described.
2.Trichophyton concentricum Blanchard 1896 was isolated from this case.
3.A discussion of the literature concerning fungi isolated from other cases revealed that E. tropicale, E. indicum, E. Castellani, E. Mansoni, and E. Roquettei should be reduced to synonymy with E. concentricum.
4.The Endodermophytons should be placed in the genus Trichophyton and the genus Endodermophyton dropped.
Aided by a grant from the John and Mary R. Markle Foundation.