Decuffata. 
* Alea, 
WORMS. ZOOPHYTA. 9:1. Millepora. 636 
cinereous, but feldom white: fometimes it i$ fhaped like the 
kernel of a walnut, often in large comprefied mafles, fome- 
times like a fmall bunch of grapes, bnt moft frequently in fhort 
irregular ramifications of a chalky tuberculate appearance and 
ftony fubftance. 
Compofed of cretaceous ere& laminze or plates croffing one 
another and uniting differently here and there. 
Soland. and Ellis Corall. p.131. 2.3. tab, 23. fogs 
Inhabits the coaft of Portugal, in mafles of 5 or 6 inches wide. 
Confifting of thin femicircular plates difpofed horizontally. 
Solander and Ellis Corall. 5. 131. m. 4. tab, 23. F. 10—12. 
Inhabits the Corni/h coaft, adhering to and covering the M, poly- 
morpha, and is either red, purplifh, yellow or whitifh: ex- 
tremely thin and brittle, With femicireular plates of various 
fizes conftantly growing horizontally with their margins bend- 
ing over, making them convex on the upper fide and concave 
bencath, 
*Pumicofa. lrregularly fhaped, brittle, rough, and compofed of fharp- 
*2 ubulofa. 
\ 
Pinnata. 
5Lilatea. 
pointed roundifh cells. 
Ellis Corall. p. 75. n. 7. tab, 27. fig. F. f. 
Solander and Ellis Corall. 5. 135. n. 10. 
Inhabits the Britijh coaíts, and is often found incrufting many of 
the Sertulariz, in fmall irregular maffes, appearing like white 
fand ftrongly united together: branches generally cylindrical, 
each about half an inch long: ce//s placed round about in al- 
ternate order, fhaped like an helmet juft opening, with a hole 
in the middle: probably a Ma¢repore, 
Parafitic, cruftaceous, pale purple, with {mall tubular cells 
difpofed in tranfverfe rows or whorls. 
Ellis Corall, p. 74. n. 6. tab. 27. fig. E.e. 
Solander and Ellis Corall. 5. 136, n. 11. 
Inhabits the Mediterranean and British coafls, and is found free 
quently encompafling the ftem of the Sertularia falcata: cubes 
erect or declining. 
Dichotomous, ere&, with tubular pores difpofed in a pin- 
nate order. 
Marf. Hift. Mar. p. 152. t. 31. f. 167. 2. 1.3. 4. & 2, 3. 5. p.153. 
t. 34. f. 168, 2. 1—35. 
Inhabits the Mediterranean; greyiáh when recent, fometimes 
green, about an inch high, and very brittle, 
Creeping proftrate, in obtufe linear divifions, with tubular 
pores on the upper furface difpofed in tranfverfe rows. 
Plane. 
