F L U S T R .A. 



*7 



10. Fluftra arenofa. 



Fluftra crajlacea are- 

 nofa lutofa^ ports Jimpli- 

 cibusfiibqui?icuncialibn$. 



Sandy Sea Matt. 



This Sea Matt is formed of 

 fand and flime into a crufta- 

 ceous body, with fmall mouths 

 placed almoft in a quincunx 

 order. 



Rnglijh fandy Millepora. Ellis Corallin. pag. 74. 

 tab. 25. fig. e. 



This fandy Sea Matt, of which but a fmall part is 

 drawn at fig. e. tab. 25. Effay on Corallines, was fent 

 me from Holyhead, in Wales. 



Its form, when intire, was exactly like the upper femi- 

 circular part of a colt's hoof. The furface of each of the 

 cells was a little hollow in the middle, with a fmall hole 

 in each : from the appearance it made, when I received it 

 intire, I judged it to be what Imperatus calls his Lorica 

 Marina. 



There is a layer of fand and flime under as well as over 

 the cells which compofe it. It is very friable when dry. 



Whether it belongs to this genus or not, I fubmit to 

 the curious. 



11. Fluftra tubulofa. 

 Fluftra adnata mem- 



Pipy Sea Matt. 



hranacea, cellulis fimpli- 

 cibus ovato-ob/ongisy ofcu- 

 lis tubulojis ereclis. 



Membranaceous adhering 

 Sea Matt, with a iingle layer 

 of oblong-oval ceils, and a 

 tubuious erect opening to each. 



This Sea Matt was fent by Mr. Greg, among many 

 other curious fea productions, from Dominica, adhering 

 to a fucus, and differs from all the reft of this genus, in 



D ha vine 



