CORALS FROM THE MOUNTAIN LIMESTONE. 179 
of a vertical section, we had been misled by its external characters, and had placed it in 
the vicinity of the genus MJontlivaultia, under the generic name of Pal@osmilia.' A 
vertical section shows what are its real zoological affinities, and we do not think that this 
fossil ought to be distinguished from the true Cyathophylla, which correspond nearly to 
the Strephodes of Professor M‘Coy. 
C. Murchisoni differs from most of the simple species of the same generical division 
by the smallness of its tabule and the thinness of its septa. It much resembles 
C. Wrighti,? but this latter Coral is more compressed, harder, and has stronger septa. 
It is also closely alluded to C. Stutchburyi,’ which differs from it by the septa being 
stronger and less numerous, and by having a rudimentary septal fossula. 
2. CyarnopHyLtum Wricutr. Tab. XXXIV, figs. 6, 6a. 
CyaTHOPHYLLUM Wricutt, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzoz., 
p- 370, 1851. 
This species much resembles the preceding one, but the corallum is shorter, very much 
compressed towards the calice, and bent near its basis only. Calice elongate in the 
direction of the curve, flat near its edge, and with a narrow somewhat shallow central 
depression ; proportion of the short and long diameter of the calice 100 : 200, or even 220. 
Septa numerous, (at least 130,) somewhat unequal alternately, thin and straight, or slightly 
curved inwardly. Height of the corallum 33 inches; calice: great diameter 23 inches ; 
short diameter 1 inch. 
Found at Frome, Somersetshire. Specimens are in the collections of Mr. Bowerbank 
and of Dr. Wright (Cheltenham). 
The compressed form which exists in this species is very rarely met with in Cyatho- 
phyllum. 0. angustum,* the transverse section of which is also oblong, is not bent at its 
basis as C. Wrighti is, and its septa are not so closely set. 
3. CyaTHopHyLium Srurcusuryi. Tab. XXXI, figs. 1, 1a, 2, 2a, and Tab. XXXIIL, fig. 4. 
TURBINOLIA FUNGITES, Phillips, Geol. of Yorkshire, 2d part, p. 203, pl. ii, fig. 23, 1836. 
(Not 7. fungites, Fleming.) 
— ExpPansa, M‘Coy, Syn. Carb. Foss. of Ireland, p. 186, pl. xxviii, fig. 7, 1844. 
CYATHOPHYLLUM EXPANSsUM, D’Orbigny, Prod. de Paleont., vol. i, p. 159, 1850. (Not 
Fischer.) 
—- Srurcusuryi, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzeoz., 
p- 373, 1851. 
1 Comptes-rendus de |’Académie des Sciences, 1848, vol. xxvil, p. 467. 
2 See tab. xxxiv, fig. 6. 3 See tab. xxxi, figs. 1, 2; tab. xxxiul, fig. 4. 
4 Lonsdale, in Murchison’s Silurian Syst., tab. xvi, fig. 9. 
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