TRIBE I.— "ASTR.EACEA. 
15 
I. Euphyllia gracilis (Dayia),— Convex, furcato-ramose ; disk mostly 
simple. Corallum having the calicles subturbinate, scarcely 2 lines distant, 
the exterior minutely striate ; cell usually i an inch broad, sometimes 1 inch 
long; lamellse very broad, extremely thin, a very little exsert, 
Caribbean Sea, Esper.— -West Indies, Bost. Soc. jYat. Hist. 
8. Euphyllia aspera (Dana).— -Furcato-ramose, hemispherical; disks 
usually simple and nearly circular. Corallum with the branches subdivari- 
cate, i to f of an inch thick, calicles subturbinate ; coarsely ribbed-striate and 
spinulous, below nearly smooth ; lamellse unequal, very broad, exsert, ob- 
liquely truncate, the larger one-tenth of an inch apart, and with about 3 
smaller intermediate. 
Plate 9, fig. 7, part of corallum, natural size ; 7 a, profile section showing 
the form of the lamellae.— West Indies? 
9. Euphyllia aperta (Dana).— Furcato-ramose, hemispherical, with the 
disks mostly simple. Corallum having the branches f of an inch thick, subdi- 
varicate, short, calicles subturbinate, | of an inch long and broad, remotely 
costate, with the ridges somewhat denticulate and below becoming obsoles- 
cent; lamellae few, thin, about 1 line exsert, the larger quite broad and ob- 
liquely truncate at top, ^ of an inch apart, and usually with one quite small 
intermediate lamellae. 
West Indies ? 
10. Euphyllia rugosa (Dana). — Furcato-ramose, hemispherical ; polyps 
pale grayish red, disks usually simple ; tentacles numerous, stout, f of an inch 
long, with yellow tips. Corallum with the calicles f to 1 inch broad, some- 
times lobed, 3 to 4 lines apart ; exterior often transversely wrinkled and finely 
carinato-striate ; lamellae broad, entire, scarcely at all exsert. 
Plate 6, fig. 3, a clump of the natural size, with most of the polyps fully 
expanded, a few partly so or closed; 3a, a tentacle enlarged; 3 6, a separate 
calicle; 3 c, part of a transverse section of a branch ; 3d, one of the lamellae ; 
3 e, corallum of a young individual, found growing from the side of one of the 
calicles. — The Feejee Islands, in shallow water about the reefs. — Exp. Exp, 
II. Euphyllia turgida {Dana). — Hemispherical, furcato-ramose, disks 
sometimes sparingly compound. Corallum with the calicles mostly to 2 
inches broad, at times 3 inches long, and lobed ; exterior undulate and rather 
remotely faint carinato-striate : lamellae very broad and numerous, entire, thin, 
a little exsert. 
Plate 9, figs. 9 a, 9 6, outline of lamellae. — Malacca, East Indies. 
3. Meandrine Euphylliae. 
12. Euphyllia meandrina {Dana ). — Very large, hemispherical, disks 
mostly compound, linear, and meandering. Corallum, with the branches 
