TRIBE III. MADREPORACEA. 
Ill 
Genus II.— GOKIOPOKA. — Quoy & Gaymard. 
Erect glomerate, and lobed ; polyps with 16 to 24 tentacles, 
and 1 to 2 lines broad. Coralla throughout light porous ; cells 
scarcely as deep as their breadth or superficial, granulous within. 
1. Goniopora pedunculata [Quoy ^ Gaymard). — Glomerate; polyps 2 
to 3 lines salient, bright green ; tentacles oblong, obtuse. Corallum very po- 
rous ; cells small (1 line broad), polygonal ; margin granulate, or irregularly 
denticulate. 
Port Dorey, New Guinea . — Quoy 8^ Gaymard. 
2. Goniopora columna [Dana). — Erect, 1 to 2 feet high, compressed cyl- 
indrical, and subclavate, 2 to 4 inches thick; summits rounded, furcately sub- 
dividing above ; alive for 2 to 3 inches ; polyps cylindrical, 2 to 3 lines salient, 
of a pale lilac tint, tentacles 18 to 24 in number. Corallum very porous ; cells 
angular, excavate, 1^ lines broad ; margin acute, granulate ; cells below ob- 
solete. 
Plate 56, fig. 5, zoophyte, natural size ; 5 a, polyp, enlarged ; 5 6, part of 
summit, showing the cells, natural size. — Feejee Islands. — Exp. Exp. 
TRIBE MADREPORACEA: — APPENDIX. 
The animals of the following genera are unknown ; and the 
species are so imperfectly understood, that their connexion with 
the tribe Madreporacea is uncertain. 
ERRINA.— Gray. 
Ramose; branches covered with calicles; calicles tubular, a 
little prominent, having a longitudinal fissure below ; near Mil- 
lepora in habit. 
Errina aspera (Esper,) Gray. — Ramose, 4 inches high; subcompressed, 
somewhat flabellate; branchlets short, subacute; calicles scattered every 
where, even over the summits, the surface, therefore, throughout rough. 
Mediterranean Sea.— X^amarcA:, Esper. 
