Fig. 2. SEM. Ventral view. Cell round with deep cingulum and sulcus. Detritus present.
Fig. 3. SEM. Antapical view of hypotheca: large unequal plates.
Fig. 4. SEM. Dorsal view. Po off-center and conspicuous on rounded epitheca. Detritus partially covers thecal surface. Po=apical pore plate.
Fig. 5. SEM. Po long and narrow with a slit-like pore. Evenly spaced round pores border the slit. Detritus attached.
Fig. 6. Line drawings. Apical view of epitheca; antapical view of hypotheca.