SERTULARIA. 57 



Tab. 6. 



72. Sertularia Filicula. Fern Coralline. Fig. c. 



c. 



Sertularia ramofijjima This Coralline is very much 



pinnata y Jlirpe Jlexuofa^ branched and pinnated ; the 

 ramulis ex angttlis ahermsi ftera is bent to and fro into 

 denticulis ovato tubulofis ; alternate angles ; the little 

 fuigulo ad axillam arre8lo\ branches are produced from 

 ovariis obverfe ovatis apicc the angular points ; thefe are 

 tubulatis. furnifhed with oppofite oval- 



tubulated denticles : in each 

 axilla, or part where the little 

 branches come out, is an erect 

 fingle denticle. 



Tab. 6. Fig. c. C. 



This is one of the moft delicate fpecies of our Engliih 

 vehicular Corallines. It has been taken by fome authors 

 and collectors of thefe fubftances, for a leffer fpecies of 

 the Sertularia abietina, or Sea-Fir : but the Angularity 

 of its waved ftem, with its erect fingle denticle at the in- 

 fertion of the branches, together with the fingle pair of 

 denticles on each part of the ftem, that form the angles, 

 make it a very diftinct fpecies from any of this genus. It 

 is commonly found upon the coafc of Scarborough, in 

 Yorkfhire. 



33. Sertularia quadriden- _ , , . 



. . b oar-toot oea Coralline. Tab. 5, 



tata. 



Sertularia /implex arti- This creeping Coralline 



culata repens, denticulis fends forth fingle flems, that 

 quatemis oppofitis ventri- are jointed ; the joints have 

 coJiSf articulis fubiurbina- generally four denticles of the 



I 



Fig. g. 

 G. 



