Scanning electron microscope (S.E.M.) observation techniques have enabled paratabulation formulae to be elucidated (in both Kofoidian and Taylor-Evitt notation) for the partiform gonyaulacoid dinocyst genus <i>Druggidium</i> Habib. Archaeopyle variability within the species of this genus is highlighted, further emphasising the uncertainties concerning the taxonomic significance of archaeopyle type. The genus <i>Druggidium</i> is therefore emended, as is the species <i>D. jubatum</i> Duxbury. One new species, <i>D. augustum,</i> is described.