The type material of Colombian species of freshwater triclads (Fuhrmann, 1914) is revised and the original descriptions corrected and amplified. Planaria polyorchis is conspecific with Dugesia festai (Borelli). Planaria longistriata is a typical Girardia species of the Dugesia (Girardia) tigrina group, a group widespread in North and South America. Planaria paramensis and P. cameliae belong to a group of Dugesia species characterized particularly by their dorsal testes, and exemplified by a number of species in and around the Caribbean region.