WORMS. ZOOPHYTA. 91, Millepora; 639 
cinereous, but feldom white: fometimcs it is lhaped like the 
' kernel of a walnut, often in large compreffed maffes, fome- 
times like a fmall bunch of grapes, bnt moft frequently in flwrt 
irregular ramifications of a chalky tuberculate appearance and 
ftony fubftanee. 
Compofed of cretaceous erefl: laminae or plates croffing one 
another and uniting differently here and there. 
Sotand. and Ellis Corall. 23. /'• 9 * 
Inhabits the coal); of Portugal, in mafles of 5 or 6 inches wide. 
Confiding of thin femicircular plates difpofed horizontally. 
Solander and Ellis Corall. p. 131. k. 4 - 12. 
Inhabits the Cornifi coaft, adhering to and covering the M. poly- 
morpha, and is either red, purplifh, yellow or whitifh : ex- 
tremely thin and brittle, with femicircular plates of various 
fizes conftantly growing horizontally with their margins bend- 
ing over, making them convex on the upper fide and concave 
beneath. 
'^X’nicoja,' Irregularly fhaped, brittle, rough, and compofed of fharp- 
pointed roundifh cells. 
Ellis Corail. p. 75. n. 7. tab. 27. f. 
Solander and Ellis Corail. p. IS,!,. n.\Q. . 
Inhabits the Brttijh coafts, and is often found incrufting many of 
the Sertulariae, in fmall irregular maffes, appearing like white 
fand ftrongly united together : branches generally cylindrical, 
each about half an inch long: cells placed round about in al- 
ternate order, ftiaped like an helmet juff opening, with a hole 
in the middle : probably a Madrepore. 
Parafitic, cruftaceous, pale purple, with fmall tubular cells 
difpofed in tranfverfe rows or whorls, 
Ellis Corall, p. 74 - «• 6- lab. zj. %.E.e. 
Solander and Ellis Corail. p. ly), n. 11 , , . - , r 
Inhabits the Mediterranean and Britifi coafts, and is found tre- 
quently encompaffmg die ftem of the Sertularia falcata ; tubes 
ereft or declining. 
Dichotomous, ereft, with tubular pores difpofed in a pin- 
nate srder 
Marf Hijl. Mar. p.it, 2 . t.l\.f.l(> 7 . n. 1. 3 . 4 .& 2 , 3 . 
t. 34./. ibS, n, 1—3. , r ■ 
Inhabits the Mediterranean; greyifh when recent, fometimcs 
green, about an inch high, and very bntdo. 
Creeping proftrate, in obtufe linear divifions, with tubular 
pores on the upper furlace difpofed in tranfverfe rows, 
^ Plane, 
