PLATE XV 



Fig. i. Tubulanus nothus, Burger, x 2. 



Fig. 2. Tubulanus nothus. Head from above. 



Fig. 3- Zygonemertes capensis, n.sp., green variant, x 5. 



Fig. 4. Lineus ruber, O. F. Miiller. Head, x 6. 



Fig. 5. Cerebratulus aerugatus, Burger. Head, x 6. 



Fig. 6. Zygonemertes capensis, n.sp. Head of colourless variant, x 5. 



Fig. 7. Nemertopsis tenuis, Burger, x 1 £. 



Fig. 8. Cerebratulus fuscus, Mcintosh, x 5. 



Fig. 9. Tetrastemma nigrolineatum, n.sp. Head, x 10. 



Fig. 10. L?Wi« bilineatus, Renier. x 10. 



Fig. 11. Oerstedia maculata, n.sp. x 10. 



Fig. 12. Zygonemertes capensis, n.sp. Brown variant, x 5. 



Fig. 13. Amphiporus pulcher, Johnston, x 5. 



Fig. 14. Emplectonema ophiocephala (Schmarda). x 5. 



Fig. 15. Tetrastemma candidum, O. F. Miiller. Head, x 5. 



