— 200 — 



52. L. obtusa (Huds.) Lamx. Ess. p. 42; J. Ag. Epic. p. 653. — 

 Fucus obtusus Huds. flor. angl. p. 586. 



Some of the present specimens agree tolerably with var. squarrulosa 

 Grun. Alg. Fidji-Samoa Islds. p. 23. (from Tongatabu). 



Koh Chang-Strait at Lem Ngob, on rocks between tide-marks. 

 Area: Widely distributed in all warm Oceans. 



Acanthophora Lamx. 

 53*. A. «mentalis J. Ag. Spec. II. p. 820. 



The specimen from Lem Ngob is sterile, therefore doubtful, but I 

 have seen some little fertile fragments between Algæ from Koh Kahdat 

 which certainly belong to this species. 



Lem Ngob, Koh Kahdat in shallow water. 



Area: Manila; Samoa-Tonga-Marianes Isis. ; (Siam? sub nomine A. Thieryi). 



Polysiphonia Grev. 



54. P. scopulorum Harv. Mar. Bot. W. Aust. Nr. 88 ; J. Ag. Spec. II. p. 940. 

 On stones. 



Koh Chang Noi, on coral-reef in shallow water. 

 Area: W. Australia. 



Tolypiocladia Schmitz. 



55. T. gloiiierulata (Ag.) Schm. in Engl. u. Prantl. Pfl. fam. p. 441. — 

 Polysiphonia glomerulata (Ag.) J. Ag. Spec. "II. p. 1016. — Polysiphonia 

 calodictyon Harv. ; Polysiphonia calacantha Harv. — Hutchinsia glome- 

 rulata Ag. Syst. p. 158. 



Koh Kahdat, Koh Chang Noi, on coral-reefs in shallow water. 

 Area: Indian and Pacific Oceans. 



Leveillea Dene. 



56. Ii. juiigeriiiamiioides (Mart. et. Her.) Harv. Mar. Bot. W. Aust. 

 p. 539. — L. gracilis Dene. — Polyzonia, jungermannioides (Mart. et. Her.) 

 J. Ag. Spec. If. p. 1169. — Amansia jungermannioides Mart, et Her. in 

 Flora 1836 p. 485. 



Koh Chang Noi, Koh Lom, on coral-reels in shallow water. 

 Area: Red Sea; Indian and Pacific Oceans. 



Ceramiaceae. 



Ceramium (Roth) Lgby. 



57. C. fastigiatum Harv. in Hook. Journ. Bot. p. 303; J. Ag. Epic, 

 p. 96; Anal. alg. Gont. II. p. 16. 



