TRIBE II.— CARYOPHYLLACEA, 
51 
II. Glomerate. 
3. PsAMMOcoRA FossATA (Dana).— Subcylindrical, 5 inches thick, surfac(? 
nearly even, piano-rotund at top ; surface with cells often an inch long and 
meandering, and containing 6 polyp-mouths, others simple, 1-i^ lines deep, and 
to 2 lines broad ; ridges rounded. 
Plate 26, fig. 2, outline view of corallum; 2 a, surface of the same, natural 
size. — Feejee Islands. — Exp. Exp. 
4. PsAMMOCORA coLUMNA {Dana). — Erect, very stout, subdivided above, 
lobes erect and crowded, compressed-cylindrical, truncate at apex, 1 to 3 
inches broad, surface even, with deep cells, subangular, sometimes lobed, a 
line broad, sometimes 3 lines long (and then containing 3 polyps) ; ridges 
round. 
Plate 25, fig. 1, corallum, natural size ; 1 a, cell ; 1 6, sectional view. — Fee- 
jee Islands. — Exp. Exp. 
5. PSAMMOCORA EXESA (Dana).— Erect, very stout, subdividing above, 
lobes erect and crowded, subcylindrical, 1 to 3 inches thick, surface uneven 
and often gibbous, apex rounded or subtruncate ; cells 1-J lines broad, irregu- 
lar, nearly superficial, often imperfectly diffluent, ridges obsolescent; color 
purplish-brown, tentacles none. 
Plate 26, fig. 1, corallum, natural size ; 1 a, animals enlarged ; 1 6, a cell 
magnified ; 1 c, sectional view of interior.-— Feejee Islands. — Exp. Exp. 
Tribe II.— CAEYOPHYLLACEA. 
Actinaria witli numerous tentacles, in two or more series. 
Mostly gemmiparous ; gemmation inferior, the polyps not widen- 
ing at summit. Generally coralligenous ; coralla calcareous, cells 
many -rayed, surface between the cells in aggregate coralla, rarely 
obsoletely lamello-striate, or not at all so. 
Family I.— CYATHOPHYLLID.^. 
Caryophyllacea forming calcareous coralla. Gemmate, with 
the buds inferior, either lateral or growing upward from the 
summits. Corallum of a polyp usually transversely or obliquely 
8 
