CORALS FROM THE SILURIAN FORMATION. 259 
Corallum massive, convex or subgibbose. Cadices unequal in size; the large ones 
usually dispersed amongst the smaller ones, almost circular, and about 1 line in diameter ; 
the smallest about a quarter of a line in diameter; others presenting all the 
intermediate degrees between these two sizes. In some specimens the difference between 
the calices is much less marked. A vertical section shows that the walls are thin, and the 
tabule horizontal, and, in general, closely set, but very unequally so. 
Found in the lower Silurian deposits at Under Daniell’s Wood, Tortworth; in the 
Wenlock limestone at Wren’s Nest, Dudley, Benthall Edge, Falfield near 'Tortworth, 
Much Wenlock; and, according to Mr. Lonsdale, in the lower Ludlow rocks at Sitch 
Wood, Ledbury, Wentwoon Common, Wenlock; and in the middle Ludlow rocks, at 
Aymestry, T'atton Edge, Downton on the Rock. Professor M‘Coy mentions its existence 
at Ardaun, Cong, and Kilbridge, in Galway ; and at Egool and Bellaghaderreen, in the 
county of Mayo. It is also met with in Sweden. 
Specimens in the Collections of the Geological Society, of the Museum of Practical 
Geology, of Mr. J. S. Bowerbank, of the Bristol Museum, We. 
Some very small specimens, found at Dudley, and belonging to the Collections of 
Mr. Fletcher and of Mr. Bowerbank, present the general characters of this species, but 
have much larger calices ; they appear to be young colonies of the above-described species, 
and we easily understand how the mode of multiplication of Favosites must tend to 
diminish the dimensions of the large corallites, as the number of individuals so produced 
augments. 
In no other species of this genus is the difference in the size of the calices so great as in 
F. Forbesi. 
5. Favosrres Histncert. ‘Tab. LXI, figs. 1, la, 16. 
TUBULARIA FossILis, &c., Magnus Bromel, Acta Liter. Suec., vol. ii, p. 408, 1728. 
Maprepora ports, &c., Fougt, Ameen. Acad., vol. i, p. 101, tab. iv, fig. 21, 1749. 
Funcites, Th. Pennant, Philos. Trans., vol. xlix, 2d part, p. 513, tab. xv, fig. 4, 1753 
Favosires aLcyon? Defrunce, Dict. Sc. Nat., vol. xvi, p. 298, 1820. 
—  Gornianvica? De Blainville, Dict. Sc. Nat. (Atlas Zooph.), pl. xl, fig. 4, 1830. 
—Man. d’Actin., pl. xii, fig. 4. 
—  atcyon? De Blainville, Dict., pl. xlu, fig. 5.—Man., pl. lxiv, fig. 5. 
Favosites? Pander, Beitr. zur Geogn. des Russ. Reiches, pl. xxix, fig. 9, 1830. 
CaLAMOPORA MINUTISSIMA? Castelnau, Terr. Sil. de PAmér. du Nord, pl. xviii, fig. 2, 1843. 
Favosirxus Hrsrncert, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleeoz. (Arch. 
du Mus., vol. v), p. 240, pl. xvii, figs. 2, 2a, 26, 1851. 
AsTROCERIUM VENUSTUM, J. Hall, Paleont. of New York, vol. ii, p. 120, pl. xxxiv, fig. f, 
1852. 
Corallum massive, subgibbose. Calices almost equal in size, separated by walls that 
are rather thick, in general pretty regularly hexagonal, and about half a line in diameter. 
