CORALS FROM THE CORAL RAG. 91 
As to the various fossils which M. D’Orbigny considers as new species referable to this 
group, they have not been as yet characterised with sufficient minuteness to be recog- 
nisable.' 
Genus CLADOPHYLLIA.” 
CiaporuyLuiA Conysearn. Tab. XVI, figs. 2, 2a, 24, 2c. 
CARYOPHYLLIA CEsPITOSA, Conybeare and W. Phillips, Geol. of England, p. 188, 1822. 
Coral, LIKE CaRYOPHYLLIA CEsPITosa, Phillips, Ilustr. of the Geol. of Yorkshire, vol. i, 
p. 126, 1829. 
LITHODENDRON DicHoTomuUM, M‘Coy, Ann. and Mag. of Nat. Hist., s. ii, vol. ii, p. 418, 1848. 
Corallum composite, irregularly cespitose. Its branches obliquely erect, placed at 
unequal distances, and bifurcating under a very open angle: the two corallites that rise thus 
from the same parent resemble young individuals that might be produced by calicular 
gemmiparity rather than by fissiparity. The branches are cylindrical, equal in diameter, 
alternately somewhat constricted or tumefied, and covered from top to bottom by a 
complete epitheca. In some parts where this external coating has been worn away, the 
coste are visible, and assume the form of delicate obtuse, closely set, and equally deve- 
loped lines. The calices are circular, or nearly so, and the fossula narrow and deep. 
There appears to exist no indication of a columella. The septa form in general three com- 
plete cycla, and are broad, thin, not exsert, terminated by an arched, delicately denticulated 
edge, and granulated laterally. The dissepiments appear to be numerous. 
Diameter of the corallites, 13 lmes; depth of the calicular fossula almost as much. 
This fossil is found at Steeple Ashton, and specimens are in the collections of the 
Museum of Practical Geology, of the Geological Society, of the Cambridge and Paris 
Museums, of Mr. Bowerbank, and of Mr. Pratt. 
The genus Cladophyllia which we have recently proposed, comprises the Astreine 
which resemble Calamophyllia by most of their general characters, but differ from these by 
the existence of a complete epitheca. The definition of this group is therefore almost the 
same as that which we formerly gave to Lwnomia, but which is not in reality applicable to 
the species for which Lamouroux established that genus. These corals are remarkable by 
1 Calamophyllia corallina, D’Orbigny, Prod., vol. ii, p. 31, C. Lucensis, D’Orb., Op. cit., vol. i, p. 321, 
and Hunomia contorta, D’Orb., Op. cit., vy. ii, p. 32, are species established on specimens, which appear to 
us undeterminable. C. lwmbricalis and C. rugosa, D’Orb., Loc. cit., belong most likely to our genus Clado- 
phyllia; Eunomia grandis, D’Orb., Loe. cit., is a Thecosmilia, and we are inclined to think that C, inequalis, 
D’Orb., Loc. cit., belongs to the family of the Cyathophyllide. We have not seen the other species of 
Calamophyllia or Eunomia mentioned by that author. 
2 Polyp. Paleeoz., &c.; in the Archives du Museum, vol. v, p. 81, 1851. 
