

OF THE < CHALLENGER' EXPEDITION, 237 



ZONARIA VARIEGATA, Motlt. 



Small, and delicate in texture. 



Laurenciace.e. 



Laurencia piriformis, Ag.l 



Very fragmentary, and therefore doubtful 



Siphonace^: 



Caulerpa sedoides, Ag. 

 C. distichophylla, Sonder. 

 C. Boryana, J. Ag. 

 Halimeda Opuntia, Lamx. 



II. MACROLOBA, Dne. 



Udotea Dksfontainii, Dne. 



A single example, an inch in height. Compared with authentic 

 specimens from the Mediterranean, it appears to be identical. 



CODIUM TOMENTOSUM, Ag. 



C. spongiosum, Harv. 



Geog. distr. W. and S. coasts of Australia. 



VaLONIACEjE. 



Valonia fastigiata, Harv. 

 Microdictyon Agardhianum, Dne. 



Dasycladeje. 



Acetabularia calyculus, Quoy # Gaimard 

 Geog. distr. W. coast of Australia. 



TJltace^. 



■ 



Ulva latissima, Ag. 



Conferyaceje. 



Cladophora Feredayi, Harv.l 



The specimens seem to agree with the Tasmanian plant ; but 

 in this extensive and difficult genus a mark of doubt may often be 

 added with propriety. 





