4$ S E R T U L A R I A, 



1 8. Sertularia fpinofa. Silk Coralline. 



Sertularia mollis ramofa This Coralline is fmooth, 



pellucida^ ramulis ere- tranfparent, and branched ; 

 berrimis teneris dichotomis, the fmaller branches are very 

 fpinis terminantibus y den- tender, many, dichotomous, 

 ticulis obfoletis fecundis dif- , and gradually end in points; 

 tqntibusy ovariis veficulce- the denticles are but juft vifi- 

 formibus. ble, and placed at a diftance 



from each other on the fame 

 fide, from whence the ovaries 

 that are like veficlesproceed. 



Silk Coralline. Ellis Corallin. pag. 2Q. tab. n. No. 17, 

 fig. b. d. B. C. D. 



Sertularia fpinofa. Linn. Syft. Nat. Ed. 12. p. 13.12. 



This. Coralline has fomething very fingular in it, each 

 polype-head being inclofed in a veficle, which falls off 

 when the head decays : whether thefe are the ovaries as 

 well as mouths to fupply the animal with food, future 

 obfervations muft explain to us, but at prefent it feems 

 moft probable.. 



19. Sertularia dichotoma. Sea-thread Coralline. 



Sertularia longifjhna ra- This Coralline is very long,, 



mofa dichotoma^ denticu- and branched in a fubdivided 

 lis campanulatiS) pedun- manner ; it has bell-fhaped 

 cutis annulofs, ovariis denticles, fupported by ftalks 

 ovatis axillaribuS) pedu?t- full of rings : the ovaries are 

 culis contort is. oval, and fit upon twifted foot- 



ftalks at the infertion of the 

 branches. 



Sea- 



