TRIES I. ASTR^ACEA. 
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niellse radiately prolonged quite to the margin, the intermediate 
much smaller, and these alone interrupted by the oririmes. 
ZoopiLus ECHiNATUs {Dana). — Cap-shape or inverted dish-shape. Coral- 
lum thin (i inch), fragile, larger lamell® i of an inch distant, strongly den- 
tate, teeth narrow, unequal, and granulous at apex, the intermediate lamellse 
very thin, much crowded, denticulate ; oririmes not very distinct, about i an 
inch apart. 
Plate 21, fig. 6, corallum, natural size ; 6 a, outline of part of a section. — 
Feejee Islands. — Exp. Exp. 
III. Attached Fungidce, gemmate. 
Genus VII.—PAYONIA.— Lamarck. 
Attached Fungidae, budding ; explanate, glomerate or subra- 
mose ; polyps obsolescently tentaculate, scattered, rarely trans- 
versely subseriate. Coralla having the surface plane and stel- 
late, and not plicate ; oririmes distinct, but cells none ; lamellse 
nearly or quite entire, the alternate somewhat smaller. 
I. Unifaciali hypocrateriform. 
1. Pavonia explandlata [Lamarck^] Dana. — Hypocrateriform, often dis- 
torted and lobed when large, attached below at centre. Corallum ^ to ^ an 
inch thick, lamellse crowded, subequal, the larger alternate, laciniato-denticu- 
late ; oririmes remotely scattered, often 2 lines long ; under surface echinulato- 
striate and porous. 
East Indies. — Exp. Exp. 
II. Unifacial^foliaceous. 
2. Pavonia crispa {Ehrenherg,) Dana . — Small (1^ inches), foliaceous, 
hemispherical, fronds 4 lines broad, distorted, rounded at apex. Corallum 
with crowded oririmes on the under surface, scarcely a line broad. 
3. Pavonia papyracea [Dana). — Small, foliaceous, fronds solitary, erect, 
strongly crispate, very thin (scarcely i of a line thick), multilobate. Corallum 
papyraceous, lamellae very delicate, a little prominent near the oririmes ; ori- 
rimes few and remote, H lines broad ; under surface obsoletely striate, very 
slightly scabrous. 
Plate 22, fig. 3, corallum, natural size. — The Sooloo Sea. — Exp. Exp. 
4. Pavonia elephantotus {Pallas,) Dana. — P. foliaceous, cespitose ; folia 
tliin, broadly crispate, sometimes lacerate and proliferously extended. Coral- 
