Fig. 2. SEM. Antapical view. Thecal plates large and unequal.
Fig. 3. SEM. Dorsal view. Lipped cingulum equatorial.
Fig. 4. SEM. Apical pore plate: long, slightly curved, narrow with slit-like pore; 2 supporting rib-like costae (arrowheads) and evenly spaced round pores (arrows) surround pore. Po=apical pore plate.
Fig. 5. SEM. Ventral view. Cingulum lipped. Ventral pore located on right-hand ventral margin between apical plate 1' and precingular plate 6" (arrow). Narrow sulcus with flexible lists.
Fig. 6. SEM. Short longitudinal flagellum emerges from sulcus.
Fig. 7. SEM. Cingulum narrow, deeply impressed with smooth edges, and inner surface lined with row of round pores.
Fig. 8. SEM. Surface architecture. Thecal pores unevenly distributed on smooth surface. Pores round or oblong and penetrate deeply.
Fig. 9. Line drawing. Thecal plate arrangement.
Fig. 10. LM. Sulcus and cingulum. C=cingulum; S=sulcus.
Fig. 11. LM. Planozygote with 2 longitudinal flagella (arrows).