TRIBE I. ASTR^ACEA. 
47 
: 15. Fungia dentigera (Leuckart). — Elliptical or oblong-ovate, convex 
above, concave below. Corallum with the lamellae unequal, gently flexuous, 
very delicately serrulate, tentacular tooth large and prominent : below radiately 
echinulate, with the teeth crowded, slender, and obtuse. 
Plate 18, fig. 4, a lamella with the tentacular teeth of other lamellae project- 
I ing above it. — Red Sea. RiippelL — Sandwich Islands. 
I 16. Fungia scutaria {Lamarck). — Oblong-elliptic inches by 4), nearly 
flat on both sides. Corallum with the lamellae subequal, a little undulate, sub 
I entire, or obsoletely crenulate ; oririme nearly half as long as the corallum ; 
; tentacular teeth obsolete: below, crowdedly and evenly papillose; papillae 
i small rounded, scarcely h a line long. 
' Plate 19, fig. 10, outline of a section ; 10 a, form of the disk. — East Indies, 
! — Exp. Exp. 
17. Fungia pectinata (£Aren6erg).— -Oblong-elliptic, flat on both sides, 
I Corallum with the lamellae rudely dentate, oririme continued quite to each ex- 
tremity. 
Indian Ocean (.^). — Ehrenberg. 
18. Fungia Ehrenbergii [Leuckart,) Dana. — Large, oblong-elliptic, some- 
times narrower at the middle, below concave. Corallum with the lamellae 
coarsely dentate, teeth rounded at apex, and intervals usually subacute, granu- 
lous ; oririme extending nearly to each extremity : below, crowdedly echinate, 
Plate 19, fig. 11. — East Indies. — Exp. Exp. 
19. Fungia asperata [Dana). — Large, oblong-elliptical, length three times 
the breadth ; below, concave or nearly plane. Corallum with the medial ori- 
rime a little more than half its length ; lamellae rudely and spinosely inciso- 
dentate. 
Red Sea. — Ehrenberg. 
20. Fungia Ruppellii [Leuckart,) Dana. — Large, much elongate, twice as 
long as broad, convex, below concave. Corallum with unequal lamellae, rough 
on both surfaces ; denticulate, denticles unequal, usually lacerate, sometimes 
subtruncate; oririme continued nearly to each margin, undivided: below, 
echinate. 
Indian Ocean. — Leuckart. 
21. Fungia crassa [Dana). — Large, much elongate, full twice as long as 
broad, strongly convex and laterally compressed; below deeply concave, 
Corallum very stout, lamellae coarsely dentate, not granulous, teeth rounded, 
often li to 2 lines broad, oririme 4 to 5 parted ; below very crowdedly echi- 
nate. 
Plate 19, fig. 13. — Feejee Islands. — Exp. Exp. 
