Thomasomys monochromos Bangs, 1900. Proc. N. Engl. Zool. Club, 1:97.

TYPE LOCALITY: Colombia, Magdalena, Sierra Nevada de Santa Marta, Macotama, 3300 m.

DISTRIBUTION: N. E. Colombia.

COMMENT: Formerly included in laniger by Cabrera, 1961:431; but also see Gardner and Patton, 1976, Occas. Pap. Mus. Zool. La. St. Univ., 49:26, 32, who considered monochromos a distinct species.