Plate 8. 1, 2, 4-11. Helicosphaera recta Haq. (1, 4, 5)^TR, (long flange), Sample 149-900A-39R-3, 109 cm. (1) Proximal view, ×3000. (4, 5) XP and Ph. (6, 7) (long flange), Sample 149-900A-39R-3, 109 cm, XP (6) and PL (7). (2) Proximal view, ×4000, Sample 149-900A-51R-6, 47 cm. (8, 9) Sample 149-900A-44R-1, 131 cm, XP and PL. (10, 11) Sample 149-900A-44R-1, 131 cm, XP (10) and PL (11). 3, 12-15. Helicosphaera perch-nielseniae Haq. (3, 12, 13)^TR, Sample 149-900A-39R-3, 109 cm. (3) Proximal view, ×4000. (12, 13) XP and Ph. (14, 15) XP, and PL. 16-20. Helicosphaera obliqua Bramlette and Wilcoxon. (16-18)^TR, Sample 149-900A-39R-3, 109 cm. (16) Proximal view, ×6000. (17, 18) XP and Ph. (19, 20) Sample 149-900A-39R-3, 109 cm, XP (19) and PL (20). 21-24. Helicosphaera aff. H. carteri (Wallich) Kamptner. (21, 22) Sample 149-900A-50R-5, 16 cm, XP (21) and PL (22). (23, 24) Sample 149-900A-50R-5, 16 cm, XP (23) and PL (24).