44 
TRIBE I.—ASTR^ACEA. 
4. Halomitra. Polyps all scattered ; a distinct circle of tentacles to each I 
polyp-mouth (?). Corallum without a medial trench ; larnellse nearly as in the !! 
preceding, but more radiate and coarsely toothed. ! 
5. PoLYPHYLLiA. Polyps all scattered, or an imperfect medial series ; a 
single tentacle to each lamella, and not a separate circle to each polyp-mouth. 
Corallum without a proper medial trench ; surface consisting of short denticu- 4 r 
late larnellse less than half an inch long, imperfectly or not at all radiate. I jj 
6. ZoopiLUS. Polyps all scattered. Corallum without a medial trench, f 
surface consisting of long larnellse, with thinner lammellse intermediate; only 
the latter interrupted by oririmes and short, the polyp-mouths being situated i 
in the intervals between the large larnellse. 
1 
III. Budding; attached, ,5 | 
7. Pavonia. Foliaceous, unifacial or bifacial, sometimes glomerate or sub- j 
ramose ; polyps not in distinct series, or imperfectly so. Coralla compact, ■ 
surface plane or without parallel ridges ; no excavate cells, lamella distinct, j 
and nearly or quite entire. ^ 
8. Agaricia. Foliaceous, unifacial or bifacial ; polyps in more or less per- | 
fectly transverse series. Coralla with transverse ridges and fossse, sometimes | 
consisting of coalescent excavate cells, and irregular; larnellse alternately ? 
smaller, nearly or quite entire. 
9. PsAMMOcoRA. Bifackl and foliaceous, or glomerate and columnar, 
Coralla with or without large excavate cells ; larnellse equal, and very mi- 
nutely ragged-denticulate and granulous, indistinct. 
I. Free FungidcB, not gemmate. 
Genus I. — FUNGIA.-— Lamarck. 
Free Fungidae, not budding, hence quite simple; orbicular or > 
elliptic, sometimes conical. Mouth oblong. Tentacles scattered. 
Coralla with the upper surface and to some extent the under f 
surface lamello-radiate, the latter tuberculate. ^ 
a. Orbicular, but little elliptic. 
1. Fungia cyclolites a L«?narc^).— -Small, orbicular or subelliptical, 
mouth oblong ; convex above and concave below. Corallum below very finely S 
radiate ; above, with the lamellas unequal, crenulate, lateral surface rough. 
Austral Seas. — Peron and Lesueur. Lamarck. 
2. Fungia tenuis {Dana). — Small, orbicular, nearly flat, and undulate, 1-^ , 
to 2 lines thick. Corallum thin and fragile, margin subacute, larnellse very 
