156 BRITISH FOSSIL CORALS. 
whether there are or not any radiciform appendices; the tabule appear, it is true, to be 
rather more convex than in the above-described species, but the data obtained, as yet, are 
not sufficient to enable us to characterise this Coral as forming a distinct species. 
3. MicneniniaA mecastoma. ‘Tab. XLIV, figs. 3, 3a, 36. 
CaLAMOPORA MEGASTOMA, John Phillips, Ulust. of Geol. of Yorkshire, vol. ii, p. 201, pl. ui, 
fig. 29, 1836. 
Favostres MEGastroma, M‘Coy, Syn. Carb. Foss. of Ireland, p. 192, 1844. 
MIcHELINEA GRANDIS. M‘Coy, Ann. and Mag. of Nat. Hist., 2d series, vol. iii, p. 123, 1840. 
Favosires MEGASTOMA, D’Orbigny, Prod. de Paléont., vol. i, p. 160, 1850. 
MricuHeLinia MEGAStTOMA, Milne Edwards and Jules Haime, Polyp. Foss. des Terr. Palzoz., 
p. 251, 1851. 
MICHELINEA GRANDIS, M‘Coy. Brit. Paleeoz. Foss., p. 81, pl. itie, fig. 1, 1851. Good figure. 
Corallum subturbinate, convex, pediculate ; common basal plate covered with a thick 
wrinkled epitheca, and not bearing any radiciform appendices. Ca/ices very large, rather 
deep, and somewhat unequal in size. Septal strie very delicate and numerous. Zadbule 
entirely composed of vesicles, which are very convex, but always broader than high. 
Diagonal of the calices 8 or 9 lines. 
This fossil has been found at Kendal and at Bolland, in England; in the Isle of Man; 
and at Attre, near Mons, in Belgium. Specimens are in the collections of the Geological 
Society of London, of the Bristol and Cambridge Museums, &c. 
M. geometrica’ is easily distinguished from this species by the regular hexagonal form 
of its calices ; IZ. antigua’? and M. concinna’® differ from it by their large tabule, being 
almost horizontal ; and J/. favosa‘ by the presence of radiciform processes. The above- 
described species differs from JZ. conveva’ and from J. tenuisepta® by the large size of its 
corallites ; and it appears to be intermediate between these two species by the form of the 
endothecal vesicles, these being less inflated than in J/. conveaa, and more convex than 
in AL, tenuisepta. 
4. MICHELINIA ANTIQUA. 
DicryopHyiuia anTIQua, M‘Coy, Syn. Carb. Foss. of Ireland, p. 191, pl. xxvi, fig. 10, 1844. 
MicHe vinta compressa, Michelin, leon. Zooph., p. 254, pl. lix, fig. 3, 1846. 
— antiqua, D’ Orbigny, Prod. de Palzont., vol. i, p. 160, 1850. 
— — Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzoz., 
p. 252, 1851. 
1 Milne Edwards and Jules Haime, Pol. Foss. des Terr. Paleeoz., pl. xvui, fig. 3. 
2 Dictyophyllia antiqua, M‘Coy, Syn. Carb. Foss. of Ireland, pl. xxvi, fig. 10. 
5 Lonsdale in Murch., Vern., Keys., Russ. and Ural, vol. i, p. 611, pl. A, fig. 3. 
* See tab. xliy, fig. 2. 
5 D’Orbigny, Prodr., t. i, p. 107; Milne Edwards and Jules Haime, loc. cit., pl. xvi, fig. 1. 
6 Tab. xliv, fig. 1. 
