260 BRITISH FOSSIL CORALS. 
12 septa, subequal, not very thick, extending to the centre of the corallites, and formed 
by well-developed, slightly curved processes. ‘T'abule slender, rather closely set, and 
horizontal, or somewhat flexuous. 
Lower Silurian deposits at Cullimore’s Quarry, Tortworth; upper Silurian rocks of 
Benthall Edge, Wenlock Edge; Gothland; and Niagara limestone, at Lockport, and 
Rochester (J. Hall). 
Specimens in the Collections of the Museum of Practical Geology, of the Geological 
Society, of the Bristol Museum, of Mr. Bowerbank, of the Museum of Paris, &. 
In this species the septal processes are bent upwards, and more developed than in the 
other Favosites. Mr. Hall has, for that reason, proposed placing it in a new generical 
division, under the name of Asfrocerium :' but every intermediate degree between this 
structure and the most rudimentary state of the septal system in some other Favosites are 
met with, so that the line of separation would be arbitrary, and it is also to be remembered 
that in many cases the delicate and brittle processes which constitute the septa, have 
evidently disappeared during the fossilisation of the coral. In Favosites Goldfussi,’ for 
example, we have found distinct remains of the septal processes only in two specimens, 
although we have searched attentively for them in several hundred specimens found in 
various localities. 
We are inclined to think that the Dudley fossil, mentioned by Parkinson under the 
uame of Porpital madreporite, and by Dr. Fleming under that of Sareinula angularis,* is 
referable to the above-described species. 
6. Favosires cristata. Tab. LXI, figs. 3, 3a, and 4, 4a? 
MaDREPORITES CRISTATUS, Blumenbach, Comment. Soe. Scient. Gott., vol. xv, p. 154, tab. iii, 
fig. 12, 1803. 
CaLAMoporRa POLYMORPHA, Hisinger, Leth. Suec., p. 97, tab. xxvii, fig. 6, 1837. (Not 
of Goldfuss.) 
— sponaitus? Ibid., p. 97, tab. xxvii, fig. 7. (Not of Goldfuss.) 
FavositEs POLYMORPHA, Lonsdale, in Murchison, Silur. Syst., p. 684, pl. xv, fig. 2, 1839. 
CaLaMopora POLYMoRPHA, Hichwald, Silur. Schist. Syst. in Esthland, p. 198, 1840. 
Favosites POLYMOoRPHA, Lonsdale, M. V. K. Russ. and Ural, vol. i, p. 610, 1845. 
Atveouites Lonspaet, D’ Orbigny, Prodr. de Paléont., vol. i, p. 49, 1850. 
Favosires cristata, Milne Ldwards and Jules Haime, Pol. Foss. des Perr. Paleeoz. (Arch. 
du Mus., vol. v), p. 242, 1851. 
Corallum dendroidal; its branches generally spreading, cylindrical, and submamillose. 
Calices somewhat unequal in size, often almost circular, and with a rather thick margin. 
The large ones about half a line in diameter. 
1 Paleontology of New York, vol. ii, p. 120, 1852. 
2 See tab. xlvii, fig. 3. 
3 Org. Remains, vol. ii, p. 69, tab. vii, figs. 3, 7. 
4 British Animals, p. 508, 1828.—Woodward, Syn. Tab. of Brit. Org. Rem., p. 5, 1830. 
