CORALS FROM THE DEVONIAN FORMATION. 213 
oblique, and less closely set than in the other species. The lamine of the tubes of the 
Cznenchyma are thin, but assume the appearance of vertical lines, much more strongly 
marked than those formed by the dissepiments. ‘The latter appear to be quite independent 
of the adjacent tubes, and are not, in general, placed so as to correspond together horizontally. 
Found at Torquay, Teignmouth Beach, Waleombe Beach, Woolborough Quarry, 
Babbacombe, Newton, Plymouth, and Marychurch; and also in Germany in the Eifel 
Mountains, and on the banks of the river Lahn. 
Specimens are in the Museums of the Geological Society of London, of Practical 
Geology, and in the collections of Messrs. J. 8. Bowerbank, Battersby, and Pengelly. 
This coral has often been confounded with the //eliolites interstincta, but differs 
from it by the calices being much less closely set, and by the Canenchyma being more 
developed. In 4H. Murchisoni® the calices are also very distant, but in the above. 
described species the tabule are less numerous, and the dissepiments of the Caenenchyma 
are thinner than the vertical lamine of the tubes of the same tissue, and do not cor- 
respond among themselves so as to constitute horizontal strata. 
We have not adopted the name of Pyriformis, which Blainville, Mr. Lonsdale, and 
Mr. M‘Coy apply to this species, as having been given to it by Guettard; because the 
French epithet pyriforme was given by Guettard himself to several other species, but not 
made use of as a specific name, and because Goldfuss had called it Astrea porosa before 
Blainville proposed employing the former designation. 
We also see no reason for giving to the genus, to which this specimen belongs, the 
name of Pa/eopora in preference to that of He/iolites, the latter having been revived from 
Guettard’s writings in 1846 by Mr. Dana, and the former having been introduced only in 
1848 by Mr. M‘Coy. The name of (éoporites, given more recently to the same group of 
corals by M. D’Orbigny, must also, in consequence of the law of priority, be rejected. 
2. Genus Barrerssyia.® 
BarrersByiaA inzquauis. ‘Tab. XLVI, figs. 2, 2a, 26. 
BatrersByta INHQUALIS, Milne Edwards and Jules Haime, Monogr. des Pol. Foss. des Terr. 
Paleeoz., p. 227, 1851. 
Corallum composite, massive. Corallites very unequal in size, with thick non-costulate 
walls, united together by a thin, spongiose, irregular Caenenchyma.  Calices almost 
circular, never subpolygonal. Septa small but well defined, somewhat unequal in size 
alternately, rather thick towards the wall, but very thin mwardly ; 26 of them in the large 
calices. Tabule appearing to be vesicular, and filling the visceral chambers. Cenenchyma 
! Astrea porosa, Hisinger, Leth. Succ., p. 98, tab. xxviii, fig. 2, 1837. 
? Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleeoz., p. 215, 1851. 
3 Milne Edwards and Jules Haime, Polyp. Foss. des Terr. Paleeoz., pp. 151, 227, 1851. 
