The morphology of male and female Pharyngodon mamillatus (Linstow,1897) was studied by means of light and scanning electron microscopy The nematode is redescribed from Tarentola annularis from Fayoum governorate in Egypt. The use of both light and scanning electron microscopy offered more morphological details of the wonn including the lateral band., cuticular surface, mouth opening, 6 lips possessing 3 papillae, vulva surrounded by two cilmted double walled folds and terminal spike which is longer in female than male . The present work added more details about the cuticular surface, mouth opening, lips, longitudinal ridges and vulval opening.