56 SERTULARIA. 



of an oval form with fquare 

 fides, the angles end in points 

 at the corners on the top ; in 

 the middle of each is a little 

 tubulous opening. 



Tab. 6. Fig. b. B. 

 Tab. 7-31. Sertularia Pennatula. Sea-Pen Coralline. 



Fig. 1. 2. 



Sertularia fimplex pin- This Coralline has a fingle 



nata^ pinnis incurvis ar- pennated ftem; the pinnae or 

 ticulatiS) denticulis fecun- fide fmall branches are jointed 

 dis campanulatis corniculo and curvated ; the denticles 

 truncato fuffultis, margi- are ranged on one fide, each 

 nibus crenatis Jpinis duo- fupported by a little horn-like 

 bus oppofttis inJlruc7is,ova- tube; they have a crenated 



riis margin, with a little fpine on 



each fide, oppofite to each 

 other; the ovaries are not 

 known. 



Tab. 7. Fig. i. 2. 



This Coralline is as remarkable for the elegance of its 

 form, as its likenefs to the feather of a pen. It is of a 

 yellowifh-brown color, about five or fix inches high. 

 There are many of them rife together from the fame ad- 

 hering tubes, with ftifF jointed items. The little crooked 

 tubes that fupport the denticles are longer in this fpecies 

 than in any of the like kind, being twice as long as the 

 denticles. 



It is not uncommon among the iflands in the Eaft 

 Indies. 



32. Sertularia 



