"2 
Plate XXX, 
F ig. &. 
Plate XXX, 
Fig. d. D. 
Natural Hiftory | 
when it was received, the Infedts were vifible in the Cells, | 
but dead. 
Fig. a, N°. 3. reprefents ee exact gers of it, grow- 
ing on a fall Oyfter-thell. . 
_ Fig. & is a Piece of the Surface, ogi to ier the 
Entrances of the Gells. | 
Fig. B, is a crofs Seétion, and CG an. ct Section, to 
fhew the ‘nwa F orm and Partitions of the Cells magnified, 
Fig. b, is a Piece of Italian Coral, fhaped like a Stag’s 7 
“Horn, al called by Imperatus, Porus cervinus. It is intro- 
duced here to fhow, that upon magnifying it in feveral © 
Views, the outward and inward Form of the Ga are €x- 
actly the fame with this before us. 
Fig. D, is the magnified Appearance of Fic. d. - This 
thaws the fame fhaped Cells furrounding a Fucus ; but thefe 
sate made of fofter Materials. Their Entrances are guarded 
Plate XXV. 
Fig. d. D. 
by Spines; and their Surfaces are fuller and rounder, than 
thofe of the ftony Coralline, being of a fpongy Texture. For 
the ftony ones, from being plump and round, when they were |. 
quite frefh from the Sea, funk clean toa flat suuiiiee as 
they became dry. | 
To this I fhall adda Decenton of that beautiful AG/b- 
pora called, the Rerepora efchara marina, of Imperatus, pag, 
630: boee this has been taken for the Efehara retiformis, 
of Ray, jutt deferibed. | 
This i. found growing to Shells rae Rocks on the Folin 
Shore, in irregular leafy Figures, but very often i in the Form 
of a Cup, or Drinking-glafs, irregularly expanded at the 
Brim. As at Fig, d, in Plate XXV. it is made up of a Com- 
- bination of Infeats Cells, the whole Subftance is regularly 
pierced — 
