TRIBE II. — CARYOPHYLLACEA. 
61 
11. Sttlina. Calicular tubes united by a cellular base or by plates at in- 
tervals ; the exterior striate ; centre of cell becoming prominent and exsert. 
B. Polyps long exsert; calicles nearly or quite obsolete. 
12. Astroitis. Corallum glomerate ; cells concave. 
A, Polyps not exsert; calicles of gemmate zoophytes prominent. 
a. Cells within coronate. 
Genus I— ECMBSUS.— Philippi. 
Non-budding Caryopbyllidge, free ; disk-shape, and nearly flat 
below. Coralla above radiate with lamellae, and coronate with 
papillae about the centre. 
Genus II. — CYATHINA. — Ehrenbekg. 
Simple, attached, turbinate ; polyps like those of the Caryo- 
phylli^. Coralla with the lamellae nearly or quite entire, cells 
coronate within. 
1. Cyathina cyathus {Lamarck,) Ehrenherg. Clavato-turbinate, two 
inches high. Corallum nearly smooth without ; larnellge entire or nearly so, 
stout, a little exsert, rounded above ; cells deep, papillose at bottom. 
Mediterranean Sea, where, according to E. Forbes, it ranges in depth from 
five to ninety fathoms. 
2. Cyathina pezita {Ehrenherg), — Three lines high, and 1 thick, sub- 
flexuous. Corallum having the lamellae truncate within ; six medial points, 
flexuous, single, not placed opposite the larger lamellae. 
3. Cyathina Smithii {Broderip,) Dana. — Rather small, nearly cylindrical, 
Corallum decidedly striate without ; lamellae unequal, mostly with 3 smaller 
intermediate, sparingly plicate and lightly crenulate ; bottom obsoletely tuber- 
culate, and consisting of stony pieces. 
Coast of Devonshire, T. Smith, Esq . — Cornwall, Mr. Coutch. 
4. Cyathina turbinata {Dana). — Small, turbinate, below much attenu- 
ated. Corallum finely striate, papillae about 12, small, very thin and fragile, 
lamellae scarcely exsert, with 3 to 5 intermediate smaller. 
