70 
TRIBE II. CARTOPHYLLACEA, 
Family III.— GEMMIPORID^E. | 
Caryopliyllacea with broad, often convex, disks to the polyps, | 
having the tentacles marginal and short. Coralla internally po- 
rous, surface granulous and not striate, margin and sides of the i 
cells stout ; lamellae included, narrow and neatly even. 
This family includes but two genera : 
Oemmipora, Calicles prominent, cylindrical or conico-cylin- ' 
drical. ! 
Astreopora. Calicles obsolete or nearly so. 
Genus I. — GEMMIPOEA. — Blainville. 
Foliaceous or glomerate. Coralla porous, with a granulous 
surface and cylindrical or conico-cylindrical calicles. 
I. Glomerate. 
1. Gemmipora palifera {Lamarck,) Blainville, — Glomerate, often sub- 
globose and lobed ; polyps yellowish, tentacles very short. Corallum with the j 
calicles much crowded, cylindrical, 1 to 3 lines high, and H lines in diameter, | 
and a little smaller at summit ; margin thick and stout. 
Plate 29, fig. 2, corallum ; 2 a, transverse section, enlarged ; 2 h, animal, en- 
larged. — The Austral Seas, Lamarck. — Feejee Islands, Exp. Exp. 
II. Explanate, slipitate at centre. 
2. Gemmipora peltata (Esper,) Blainville. — Explanate; frond stipitate, 
often peltate, usually concave above, often variously plicato-contorted when of 
large size; margin 2 to 3 lines thick. Corallum with the calicles cylindrical, 
sometimes obsolete, mostly 3 lines broad, with a stout margin and about 32 
lamellae to the cell. 
East Indies. The Feejee Islands. — Exp. Exp. 
3. Gemmipora patula [Dana). — Explanate; frond stipitate, infundibuli- 
form, and often variously plicato-contorted ; 1 to 1^ lines thick at the margin. 
Corallum with the calicles short, cylindrical, 2 lines in diameter; margin sub- 
acute ; many very short or obsolete. 
4. Gemmipora crater [Pallas,) Blainville. — Explanate; frond stipitate, 
infundibuliform, margin a line thick. Corallum with the calicles short, nearly 
1^ lines in diameter. 
East Indies. 
