' 









OF THE i CHALLENGER ' EXPEDITION. 239 



CORALLINACEJE 



Mastophoba Lamourouxii, Dne. 



Amphiroa FRAGILISSIMA, L. 



A. JNVOLUTA, KtZ. 



Melobesia verrucata, Lamx. 



On species of Sargassum. 

 Jania rubens, Lamx. 



* 



Sph^rococcoide^:. 



Desmia ambigua, Grev. 



The plant is probably rare, there being only two small speci- 

 mens, but sufficiently characteristic in structure &c. 



Gracilaria dactyloides, Sonder. 



Broad and narrow varieties.' 



G. CONFERVOIDES, L. ?, Var. CAPILLARIS, KtZ. ? 



G. CORNIOULATA, R. Br. 



CORALLOPSIS AUSTRALASICA, Sonder. 



The specimens are few and rather fragmentary, but sufficiently 



characteristic. 



Gelidiace^e 



Gelidium rigidum, Vahl? 

 IIypnea divaricata, Grev. 



SlPIIONlCEJK. 



i 



I Caulerpa clavifera, Ag. 



Valonia fastigiata, Harv. 



* 



Halimeda triloba, Dne. 

 H. opuntia, Lamx. 



* 



H. macroloba, Dne. 



The specimens of this genus are so imperfect that a mark of 

 doubt is necessary in some cases. 



I*I2?>\ JOURN. — BOTANY, TOL. XT. T 



