12 



THE BOTANICAL MAGAZTNE.\ 



[Vol. XXX. No. 349, 



Distr. : Zanzibar ; Indian Oceain ; Malf^^}' Archipelago, Rjiikyu, 

 Japan. 



Spvridia filamentosa (Wulf.) Hary. Phyc. Brit. t. 46, J. Ac. Epic, 

 p. 268, Ki'ETZ. Tab. Pliyc. XII, t. 42, f. a-b ; Oram. Icon. Jap. 

 Alg. Vol. Ill, p. 109, PI. CII. 

 Palau (Okada\ 



Distr. : W. Indies ; Mediterranean ; Red Sea ; Indian Ocean ; Mala}-^ 

 Archipelago ; Ryukyu ; Japan. 



Ceratnium clnvulatum Ag. Hauck Mceresalg. j). 113 ; Ccntroccras 

 tnicracanthum KuETZ. Tab. Phyc. XIII, t. 18, f. a-d ; Okam. Illustr. 

 Mar. Alg. Jap. Vol. I, p. 47, PI. XVII. ^ 



Yap (SiiiMAZAKi), Ponape and Kusai (Yanagi). 

 Distr. : All tropical seas ; Japan. 



Hah'tnenia lacerata. Sond. Alg. Trop. Anstr. p. 63, Heydr. Beitr. 

 Algenfl. V. Kais.-Wilhel. Land p. 481, tal. 26, fig. 20. 



Onlv one sterile frond wanting of root, but plucked up 

 almost from the base, 6 cm. heigh. Main segment 2 cm, long, 

 1.5 cm. broad, give rise 

 to man\' branches near 

 to each other on all 

 rounds, some arising with- 

 in the margin, and 

 branches dissolve into 

 many lesser ones which 

 are densely tufted, ciliato- 

 dentated at margin and 

 tapering to fine points. 

 Structure of frond exactly 

 like that described and 

 illustrated by Heydricii 

 in his /. c. In the Text 

 fig. 9 I have given the 

 illustration of the cross-section for the sake of comparison 



with the structure of the next standing new species. 

 Yap (Maveda). 

 Distr. : Cajie York in Australia, Finschhafen in New Guinea. 



v-^ 



i 



fy 



^ 



4£/ 



Fig. 9. Cross-section uf frond of Jfalymenia 

 lacerata Sond., ehowing the .structure 

 of frond) -y-. 



