136 



WEBEE-VAN BOSSE ON THE 



Haloplegma, Moutagne. 



IP 



1. Haloplegma Peeissii, Sond. 



Sondcr, Alg. Preiss, p. 24. 



Harvey, Pliyc. Austr. 1859, tab. 79. 



De Toiii, Syll. Alg. vol. iv. sect. in. 1903, p. 13G6. 



Cargados Carajos, at 22, 30, and 47 fms. ; botli dry and in alcoliol. 



Dlstrihution. Western Australia ; Tasmania, in the River Tamar above Georgetown ; 



Malay Arcliipelago. 



The specimens of M. Freissii from Cargados Carajos are shorter, less branched, and 

 more flabellate than most plants found in the herbaria under that name. I have not 

 ventured, however, to describe these specimens as new, for I have found no microscopic 

 character to distinj^uish them from the tvpe, the size of the main branches and the 



peripheral filaments being essentially the same in the different plants. The specimens 

 from Cargados Carajos bear tetraspores; I have not seen cystocarps or antheridia, and 

 it is possible that these may show differences in structure. Dr. Harvey, in his ' Phyc. 

 Australica,* however, calls attention to the fact that the external form of II. Freissii is 

 very variable. He foimd it growing in the lliver Tamar, a considerable distance above 

 Georgetown, where it appeared at first to be a distinct species ; but he was able to trace 

 it down to the Heads of Port Hairy mj)le, and found that it blended into the usual variety. 

 I feel very much inclined to think that the specimens from Cargados Carajos owe their 

 small size in great measure to the depth at which they were gathered. 



Antithamnion, Naegeli. 

 1. Antithamnion adnattjm, J. Ag. 



J. Agardli, Analecta algologica, 1892, p. 12. 



Solomon Island. 



Distribution. New Zealand; Malay Archipelago. 



A small specimen with tetraspores, attached to SerposipJionia. 



Spvpidia, Harvey. 



F 



1. Spyrldia filamentosa (Wulfen), Harv. 



Harvey in Hooker, Brit. Flora, vol. ii. p. 337 ; Phycol. Brit. 1871, pi. xlvi. 



Aldabra reef, outside Passi Honakan. 



Distribution. West Indies; Mediterranean; Red Sea; Indian Ocean; Malay 



Archipelago. 



Only a small fragment attached to Ampliisbetema inclica. 



Ceramium (Hoth), Lyngbye. 

 1. Ceramium cinnabarintjm (Gratel.), Hauck. 



Hauck, Die Meeresalgen von Deutscliland, 1885, p. 112. 



Solomon Island. 



Distribution. Mediterranean ; Malay Archipelago. 



A small specimen amongst other Algae. 



