54- S E R T U L A R I A. 



28. Sertularia puftulofa. Pimpled Coralline. 



Sertularia articulata This Coralline is jointed, 



fparjim-et altematim ra- and alternately, but thinly 



mofa^ geniculis fuperne branched : the appearances of 



obfolete denficulritisy ova- the denticles which lie along 



riis the upper part of the joints, 



are but juft vifible. 



Dichotomous tubular Coralline. Ellis Corallin. pag. 54. 

 tab. 27. fig. b. B. 



This Coralline was brought to me from the Ifle of 

 Wight. The fpecimen from whence the figure was taken 

 was an imperfect one ; fince then, I have from the fame 

 place received feveral perfect ones, four inches long. It 

 confifts of very delicate tender branches, which arife 

 from adhering tubes. Several of the tubes are united 

 loofely near the bafe, like the Silk Coralline ; from thence 

 they rife up into long branches, fending forth alternate 

 fhort branches, forming a joint at every branch : towards 

 the upper part of every joint are feveral fhallow den- 

 ticles, having a little circular rim with a point in the mid- 

 dle of each, not unlike a pimple or puftule : as they 

 are moft exa&ly drawn in the EfTay on Corallines, at 

 tab. 27. fig. B. through the microfcope. 



I am perfuaded many people, from the defcription of 

 this, as well as the Dodder Coralline, without examining 

 them in the microfcope, would take them for decayed 

 Confervas ; but they are true Sertularias, as the fpeci- 

 men s fhew. 



29. Sertularia 



