^2 
TRIBE II. — -CARYOPHYLLACEA. 
3. ilsTR^opoRA FUNGiFORMis {BlainvUle). — Stipitate, subfungiform. Co-| |, 
rallum porous, cells immersed, elliptical, nearly 2 lines broad, with a convex j j 
and porous bottom. 
4. AstrjEopora stelldlata [Lamarck,] BlainvUle.- — Glomerate, with an 
undulate surface. Corallum very minutely porous ; cells circular, 1 to 2 lines i 
distant, nearly a line broad, very deep; margin elevated; lamellae minute andl. 
vertical ; interstices nearly flat, very finely arenose. | 
Seas of America (?), Lamarck.— -¥ee]eQ Islands, Exp. Exp. | - 
Family IV.— ZOANTHID^. 
Caryopliyllacea either budding or simple ; exterior subcoria^ ■ 
ceous ; polyps with broad convex disks having the margin radn ' 
ately striate and sometimes much reflexed; no coral secretions, i;l 
but coral sand often included in their texture by the growing ! >' 
zoophytes. I' 
This family includes three genera, distinguished by their mode 
of budding and growth. , |; 
1. Isadra. Simple and not budding. i 
2. Zoantha. Budding and forming lines of polyps, ' 
3. Palythoa. Budding, and forming incrusting plates or convex masses. < 
Genus ISAUKA.—Savigny. ^ 
Non-budding, simple Zoanthidse. 
1. Isaura Hemprichii [Ehrenherg,] Dana.— Half an inch high, nearly •, 
black ; rays of the disk 20 to 24. ;; 
Red Sea, near Tor. — Ehrenherg, * V 
2. Isaura Savignii [Audouin,) Dana.— Four lines high, clavate, more " 
slender than the Hemprichii, and paler in color. 
Red Sea. — Ehrenherg. 
3. Isaura aster [Dana). — An inch high, and 2 to 3 lines thick, with the ' 
exterior ash-colored, disk half an inch in diameter, brown, with numerous pale 
greenish-yellow rays ; tentacles in two series, olive green. 
