CORALS FROM THE GREAT OOLITE. 105 
Family ASTREIDA, (p. xxi.) 
Genus STYLINA, (p. XXIX.) 
|. Sryziva conrFERA, Tab. XXI, figs. 2, 2a. 
GEMMASTREA LIMBATA? M‘Coy, loc. cit., p.419, 1848. 
Corallum composite, massive, tall, very convex, and subgibbose. Corallites free at 
their upper end, where they assume the form of a truncate cone; more or less prominent, 
and sometimes rather crowded. Coste closely set, straight, almost lamellar, thick, pro- 
jecting more or less alternately, and terminated by an almost entire obtuse edge.  Cavices, 
in general, regularly circular; sometimes slightly compressed, elevated, and containing a 
small, shallow, round fossula. Co/wmella styliform, but very small, and seldom projecting 
enough to be easily seen at the bottom of the fossula. Sep/a forming six equally 
developed systems, and two complete cycla; in general, no indications of septa corre- 
sponding to the third cyclum of costa. ‘The six primary septa are well developed; the 
secondary ones less so; they are all exsert, thick, straight, terminated by a strongly arched 
edge, and slightly granulated laterally. The calices often project above the common 
surface of the corallum to the distance of one line and a half; their diameter is not quite 
one line. 
S. conifera was found near Bath: we have seen two well-preserved specimens of this 
species ; one was given to us by Mr. Pratt, the other belongs to the Geological Society. 
We are inclined to think that a fossil found at Minchinhampton, and considered by 
Prof. M‘Coy' as specifically identical with the Astrea limbata of Goldfuss”, may belong to 
this species; but 4. /iméuta differs from it, by being a ramose Sty/ina, and having a longer 
columella and larger calices. 
S. conifera may easily be distinguished from most species of the same genus by its 
strongly prominent calices, and by their very unequal size. 
2. Sryzina souipa, Tab. XXII, figs. 3, 3a, 34. 
SryLopora sourpa, M‘Coy, Aun. of Nat. Hist., s. 2, vol. i, p. 399, 1848. 
Sryuina Bapuana, D’Orbigny, Prod., t.i, p. 292, 1850. 
—_ — Milne Edwards and J. Haime, Polyp. Foss. des Terr. Palzeoz., ete., 
p. 59, 1851. 
' Gemmastrea linbata, M‘Coy, Ann. of Nat. Hist., s. 2, vol. 1, p. 419. 
2 Petref. Germ., t.i, tab. viii, fig. 7, and tab. xxxviii, fig. 7. 
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