4 
Natural Hiftory of | 
Vig. B, and B 1, fhew the Joint and ramified Tubes of 
the lefler Species at Fig. 4, magnified when the cretaceous 
Surface was taken off in like manner. 
a8 
I thall introduce a third Species of articulated Coralline, 
on account of its Singularity ; it feems to be the Corallina 
 fiftulofa Famaicenfis candida cum internodiis breviffimis, & 
quap filo trajestis, of “Plukenet. 1 fhall call it the Rofary 
_ or Bead-Coralline of Famaica (See Fig. c, Plate XXV). _- 
_ The Fig. C, fhews one of the Beads magnified ; and on 
the lower Part, where the next Bead is laid open to difcover 
the Tube, we may percéive regular Rows of {mall Pipes, 
that lead from the middle horny Tube, through the creta- 
ceous Subftance to the Cells on the Surface, at ¢. 
The Tuft of Hair-like Tubes, at C; which are to be feen 
at the Top of each Branch, appear to be the Ramifications, - 
that belong to the next Bead-that is to be formed. 
When the cretaceous Part is diffolved in Vinegar, we 
find many Seed-like Particles difpofed among Cells of an 
Heart-fhape, as at Fig. C r. 
To thefe I fhall add another Sea-production, upon ac-~ 
count of its approaching to the articulated Corallines, in its 
manner of growing. | 
I received it, among many other Varieties, from the Sea- 
coaft of the Ife of Wight. It appears in the Microfcope to 
be tubular, and different from any thing I have yet met with 
from our Coafts. I have called it, 
Platexxvit.Corallina tubulata tenera, dichotoma, S puftulofa. 
tig. 
6. 2B. 
Dichotomous tubular Corallihe. 
i! This appears, through the Microfcope, full of Warts and 
Puttules, 
