5© SERTULARIA. 



vj> 



form a beautiful little grove-like figure of this animal. 

 This moft elegant fpecimen I have preferved in fpirits. 



The figure of this animal, without its ovaries, was 

 drawn by Mr. Ehret, in June 1754, at Brighthelmftone, 

 and is reprefented in the Philofophical Tranfa&ions, 

 Vol. 48. tab. 22. No. 1. A. to fhew the medullary part 

 of this animal in the ftem, united to the feveral heads in 

 their cup-like denticles. This is a moft exad figure of 

 one of thofe on the Afcidia before mentioned, when 

 viewed through the microfcope in fea-water. The figure 

 at tab. 12. fig. B. Effay on Corallines, has the ovaries, 

 but not the cup-fhaped denticles : this was taken from a 

 dried fpecimen, where the joints are very much fhrunk,. fa 

 as to look knotty. 



21. Sertularia verticillata. Rorfe-t ail Coralline. 



Sertularia fubramofa y This Coralline is loofely 



dentieulis campanulatis branched ; the denticles are 

 pedunculatis margine den- bell-fhaped, indented on the 

 tatis JubereBis verticilla- margin, fit on foot-ftalks^ and- 

 tifque y ovariis avato-tu- are placed in whirls at regular 

 bulojis. diftances round the ftem. The 



ovaries are egg-fhaped, and 



end in a tube.. 



Horfe-tail Coralline with bell-fiaped cups. Ellis Coral- 

 lin. pag. 23. tab. 13,. No. 20. fig. a. A, 



Sertularia verticillata. Linn. Syft. Nat. Ed. 1 2 . p. 1 3 1 cv 



Since I publiilied my Effay on Corallines, I have met 

 with fome fpecimens, with their ovaries, which were of 

 an oval figure, ending in a tubular mouth. 



This Coralline is remarkably tender and brittle, and: 

 the bell-fnaped denticles are fo glutinous* that it is very 



difficult 



