48 
TRIBE I.-~ASTR^ACEA. 
Genus II.— CYCLOLITES.— Lamarck. 
Free Fungiclge, not budding, and therefore quite simple; mouth 
central. Coralla above, with a depression (oririme) at centrCj 
and surface radiated with lamellae ; below, concentrically striate, 
naked. 
II. Free explanato-gemmate Fungidce. 
Genus III. — HERPETOLITHES.— Eschscholtz. 
Free Fungidae, budding and explanate ; a single medial series 
of large polyps, and others scattered, each with a separate circle 
of tentacles, which are quite short or obsolete. Coralla elongate, 
with a deep medial compound oririme, and others simple scat- 
tered ; lamella interrupted at the scattered oririmes, and hence 
short (not less than half an inch), scarcely at all radiate, denticu- 
late ; under surface echinate. 
1. Herpetolithus limacinus {Lamarck,) EschschoUz. — Narrow oblong, 
nearly flat or convex. Corallum with the lamellae lax, rarely an inch long, 
not radiating. 
Plate 20, fig. 2, profile of vertical section ; 2 a, form of corallum ; 2, h, c, d, 
outline of lamellae. — East Indies. — Exp. Exp. 
2. Herpetolithus interruptus (Ehrenberg,) Leuckart. — Oblong, convex, 
and below concave. Corallum with unequal lamellae, fasciculately interrupted, 
the medial oririme not in the middle. 
3. Herpetolithus foliosus {Ehrenherg,) Leuckart. — Oblong, convex, 
below concave. Corallum with a medial compound oririme, and a lateral 
series on either side. 
4. Herpetolithus stellaris (Ehrenberg,) Leuckart. — Oblong. Corallum 
radiate, stellate; medial oririme very narrow, lamellae interrupted, not dis- 
tinctly fasciculate. 
5. Herpetolithus strictus [Dana). — Narrow oblong, thick, attenuate at 
either extremity, convex ; below concave or nearly flat. Corallum with thin 
fragile lamellae, closely crowded, not radiate, very minutely denticulate; the 
medial oririme continued quite to each extremity. 
Plate 21, fig. 1, profile of vertical cross section. — Tahiti, Society Islands. 
Exp. Exp. 
