528 ZOOPHYTA. CELLULIFERA. Mill-eporad^:. 
CELLULIFBRA. 
A. Substance rigid, stony. 
I. Cells in the form of minute pores, imbedded. Milleporada:. 
Millepora. 
II, Cells tubular, and produced beyond the surface. TuBiPORADiE. 
TuUpora. 
Favosites. 
Tubulipora. 
Discopora. 
Filipora. 
Terebellarm. 
III. Cells utricular, adjacent, or superimposed. Escharadas.- 
Eschara. 
Retepora. 
Cellepora. 
Berenicea. 
Hippothoa. 
Alecto. 
A. A. Substance flexible. Flustrad^e. 
Farcimia. 
Flustra. 
MILLEPORADJE. 
Gen. XL VI. MILLEPORA. — Pores very minute, perpendi- 
cular to the surface, giving the interior a finely striated 
fracture ; form irregular. 
117. M. lichenoides. — Subincrusting, with semicircular plates, 
variously united ; minute pores on the under side. 
Corallium cretaceum, lichenoides, Ellis, Coral. 76. t. xxvii. f. d. D. Borl. 
Corn. 239. £ 2, b.^Mill. lich — Sol. Ell, Zooph. 131. t. 23. f. 10, 12.— 
English coast. 
Variously shaped, sometimes hemispherical; when young it is extremely 
thin and brittle, in which state it seems to be the Corallina auricularicefo^-mis 
of Sower. Brit. Misc. t. Ivi ; the semicircular plates are of various sizes, and 
constantly grow horizontally; their margins bend over, which makes them 
convex on their upper side, and concave underneath. ^ 
118. yL. polymoiyha. — Irregularly ramose, tuberculated, or 
incrusting. 
Corallium album pumilum nostras, Ray, Syn. Stirp. 32. Ellis, Coral. 76. 
t. xxvii. £ C — M. pol. Linn. Syst. i. 1285. — Common on submarine 
rocks, in shallow water. 
When young, this species appears in thin irregularly circular patches, ap- 
parently constituting the genus Melohesia of Lamouroux ; on shells and fuci ; 
it usually continues a thin crust of a purple colour ; on rocks it thickens, 
forming irregular lobes, spreading tubercular masses, or rising into irregular 
short branches. 
