16 



entangled among other algae. Hamuli emit root-fibres at the terminal 

 portion. The presence of root-fibres in rarnuli is not mentioued in 

 J. Agardh Sp. I.e. ; and I hesitated to assign my plants to this species. 

 But on comparing my plants with a specimen of this species collected at 

 Cape Flattery in Australia which was sent to me by the kindness of 

 Mr. Reinbold, I find his specimen to have also root-fibres. 



In company with the pieces of Polysiplionia glomerulata, I found two 

 small fragments of a plant which I consider to be that which 

 Mr. Heydrich has described in his Beitrage z. Kenntniss d. Algenfiora 

 von Kaiser- Wilhelm's Land p. 480 with 2 figures under the name Bostry- 

 chia ? crassula, sp. nov. ? They have no fruits and have densely inserted 

 branches after the manner of Crouania attenuata. Branches emit root- 

 fibres from terminal portion of upper ramuli or ramelli, exactly as in 

 Polysiplionia glomerulata. As my specimens are very imperfect having 

 no decumbent stem or any fruits, I can not come to a conclusion as to 

 whether my fragments are the same as his Bostrychia. But I venture 

 to state my doubt whether his Bostrychia be not some species related 

 to Polysiplionia glomerulata. 



Polysiplionia sp. indetermin. 



A small fragment was obtained from entangled masses. It has a 

 creeping stem and has secondary erect frond which once or twice branches 

 alternately setting forth on all sides. The frond is cylindrical with 16 

 pericentral cells surrounding a wide central tube. It seems to be refer- 

 able to Polysiplionia obscura (Ag.) J. Ag. among the section Obscurae. 



Polyzonia Suhr. 

 Polyzoniu jungermannioides (Mart, et Her.) J. Ag. Sp. II, p. 1169.— 

 Leveillea Schimperi, Harv. Ner. Aust. p. 72 ; Phyc. Austr. t. 171. 



Hitherto known from : The Indian Oceau ; the Australian Sea ; 

 the Red Sea; Java; Philippine Islands; Formosa; Japan. 



Gloiosiphoniaceae. 

 Gloiopeltis / Ag. 



Gl. cervicornis (Sur.) Schmitz. 



Hitherto known from : Japan. 

 Remarks : Specimens from Ogasawara-jima are all small in statue 



