12 



and truncated at both ends. Uppermost segments are a little broader 

 than the lower ones and opened at top. 



On comparing my plants with a specimen of G. cylindracea from 

 Brasil, which has been sent me by Mr. G. B. de Toni, my plants have 

 segments a little expanded beneath forks. Moreover our plants have 

 annular rugae more evidently discernible than in G. cylindracea. 



Brachycladia Sonder. 

 Brachycladia australis sond. v. dilatata, J. Ag. — Schmitz Syst. p. 

 4:.—Zanardinia marginaia v. dilatata, J. Ag. Sp. Ill, p. 534.— Galaxaura 

 marginata, Harv. Phyc. Aust. pi. 136. 



Hitherto known from : Antigua ; New Holland ; Japan. 

 Remarks : Several forms of this species are widely distributed in 

 warmer seas. The present variety is known in the Main Island of this 

 country along the Pacific coast, from the island Kiushu to the province 

 Sagami. 



Gelidiaceae. 

 Gelidium Lamour. 

 Gelidium riyidum var. radicans, J. Ag. Sp. II, p. 468, III, p. 548. 

 Hitherto known from: Warmer part of the Atlantic; the 

 Indian and the Pacific Ocean ; Riukiu. 



Sphaerococcaceae. 

 Hypnea Lamour. 

 Ilypnea pannosa, J. Ag. Sp. II, p. 453, III, p. 565. 



Hitherto known from : The Indian Ocean ; Mexico ; Australia. 

 Remarks: Our plants agree in every point with a specimen from 

 St. Augustine collected by Liebmann, which has been sent me through 

 the kindness of Mr. Keinbold. 



Rhodymeniaceae. 



Champia {Dcsv.) Lamour. 



Ghampia compressa Harv. Ner. Austr. t. 30.— J. Ag. Sp. II, p. 370, 

 III, p. 305. 



