Intra- and interpopulational variation in the morphology of Ptychoglossus brevifrontalis Boulenger, 1912 were studied. Differences in scale counts and morphometric traits among populations and between sexes are evaluated and described. Sexual dimorphism is evident in number of precloacal and femoral pores, and to a lesser degree in body elongation. Hemipenial morphology is briefly discussed. Ptychoglossus nicefori (Loveridge, 1929) is again considered a junior synonym of P. brevifrontalis. Brief comments on the species taxonomy are provided.