40 



■'-'IV. Rytiphloea angusta. sp. no v. 



Fig. 8. A portion of frond ; nat. size. 



„ 9. A portion of frond, drawn from a specimen collected at Hakodate; left divii 



ions of branch have been cut off at a ; nat. size. 



„ 10. A pinna ; 2 T 5 . 



„ 11. Terminal structure of a pinna ; ±±i. 



„ 12. A portion of stichidia ; \ 5 . 



„ 13. A terminal portion of Bytiphloea complanata Kg. ; 3 T 7, 



V. Dasya pulchra. sp. nov. 



Fig. 14. A portion of a primary pinna bearing stichidia; \ 7 . 

 „ 15. A stichidia; \ 5 . 

 „ lf>. Cross-section of frond ; M. 



VI. Basya notoensis. sp. nov. 



Fig. 17. A plant in nat. size. 



„ 18. A basal portion of frond; 6 T S . 



„ 19. A portion of the upper secondary pinnae; ° T 5 . 



„ 20. A stichidia in the lower pinnae; ^°. 



„ 21. Cross-section of frond. 8 T 5 . 



VII. Ceramlum panienlatum. sp. nov. 



Fig. 22. A portion of frond ; f. 

 „ 23. Eamuli bearing tetraspores ; 5 T °. 



VIII. Ceramium japonicum sp. nov. 



Fig. 24. A smaller form of frond bearing tetraspores; nat. size. 



„ 25. A fructified frond ; nat. size. 



„ 26. Hamuli bearing cystocarps ; \. 



„ 27. A portion of branch bearing fructified ramuli ; y. 



„ 28. Cross section of frond ; 8 T 5 - 



