CoraUinece.'] jania. 277 



nature of CoraUines may now be considered as finally set at 

 rest by the researches of Kiitzing, Philippi, and Decaisne. 

 "Whoever macerates" a portion of one of these stony vege- 

 tables in acid, till the lime it contains be dissolved, will find 

 that he has a structure of a totally different nature from 

 that of any zoophyte, while it is perfectly analogous to that 

 of many Algse/^ In PL ccxxii. of Phyc. Brit, there is a 

 figure of a portion of the frond after maceration in acids. 



2. CoRALLiNA ELONGATA, EUis and SolaucUr. 



Yide ' Phycologia Britannica / see also Dr. Johnston^ s 

 ^History of British Sponges and Corallines,^ page 221. 



3. CoRALLiNA SQUAMATA, ElUs .aiicl Solaiicler. 



Hab. On submarine rocks. Pereunial. Summer. South 

 coast of England, Ellis, &c.; West of Ireland, Professor 

 Harvey ; Youghal, Miss Ball. There is no Scottish habitat 

 given, but we have seen it on the Ayrshire coast; and we 

 have it also from Australia. 



Genus LXXIX. JANIA, Lamouroux. 



Gen. Char. Prond slender, branched in a dichotomous man- 

 ner ; the joints cylindrical ; the crust calcareous, unporous ; the 

 axis subcartilaginous, solid, constricted at intervals corresponding 

 to the articulations of the crust. Capsular sweUings produced in 

 the axis of the branches containing several granules. — Johnston. 



