CLASSIFICATIONS OF ZOOPHYTES. 
69 
Corallina. 
Halimeda. 
b b . Axis stony. 
Isis. 
B. Polypiferous basis destitute of a continuous solid axis. 
a. Polypi developed. 
b. Polypi with 8 tentacula ; the base fibrous. 
Lobularia. 
Cydonium. 
Cliona. 
b b. Polypi with tentacula exceeding- 8 in number ; 
basis nearly uniform. 
Al^yonium. 
Cristatella. 
a a . Polypi not developed. — S fongiad^e. 
Tethya, 
Halichondria. 
Spongia. 
Grantia. 
II. Cellulifera. 
Polypi lodged in calcareous cells imperforate at the 
BASE. 
A. Substance rigid , stony. 
I. Cells in the form of minute pores, imbedded.— Mille- 
PORADiE. 
Millepora. 
II. Cells tubular, and produced beyond the surface. — Tu- 
biporadje. 
Tubipora. 
Favosites. 
Tubulipora. 
Discopora. 
Filipora. 
Terebellaria. 
III. Cells utricular, adjacent, or superimposed. — Escha- 
RADiE. 
Eschara. 
Retepora. 
Cellepora. 
Berenicea. 
