246 BRITISH FOSSIL CORALS. 
The British Silurian corals differ but little from those of Gothland, and resemble also 
very much those (in small number) that have been met with in the corresponding rocks of 
Bohemia, but are generally distinct from those of the Silurian deposits of North America- 
The total number of species discovered in the various Silurian deposits amounts to 129, and 
with the exception of 8, they all belong to our divisions of Zoantharia tabulata and 
Zo. rugosa; one of which zoological forms is comparatively rare in the present time, 
and the other belongs exclusively to the paleeozoic period. Seventy-six of these corals 
are found in England, and about half of these have not been met with elsewhere. 
Most of these British fossils (sixty-eight species) belong to the families of Favositidee and 
Cyathophyllide ; and the only species not appertaining to the above-mentioned higher 
divisions are four Fungide. 
The principal paleontological collections, from which we have obtained the specimens 
studied and described in this chapter, are those of the Geological Society of London, of 
the Museum of Practical Geology, of Mr. Fletcher (Dudley), of Mr. John Gray (Dudley), 
of Mr. Bowerbank, Mr. Charles Stokes (London), of M. Bouchard-Chantereaux (Boulogne- 
sur-Mer), of M. de Verneuil, and of the Museum of Natural History of Paris. 
Most of these corals belong to the upper Silurian rocks, and those found in the lower 
Silurian deposits are in general very ill preserved and unsatisfactorily characterised. We, 
therefore, have not deemed it necessary to devote a separate chapter to their description. 
Family FUNGIDA, (Jntrod., p. xlv.) 
Genus Paumocycuus, (Lntrod., p. xlvi.) 
1. Patgzocycuius porpita. Tab. LVII, figs. 1, la, 14, le. 
FossILE QUERFURTENSE, D. S. Buttners, Corallogr. Subterr., p. 25, tab. iui, fig. 5, 1714. 
FUNGITARUM CAPITULA, PARVA, STRIATA, &c., Magnus Bromel, Acta Liter. Suec., vol. ii, p. 446, 
figs. a—h, 1728. 
MADREPORA SIMPLEX, ORBICULARIS, &c., Fougt, Ameen. Acad., t. i, p. 91, tab. iv, fig. 5, 1749. 
Maprepora porpita, Linnéd, Syst. Nat., edit. xii, p. 1272, 1767. 
CYCLOLITES NUMISMALIS, Lamarck, Syst. des Anim. sans Vert., p. 369, 1801. 
PorvitEs HEMISPHERICUS, Schlotheim, Petrefactenkunde, Ist part, p. 349, 1820. 
Mapreporites porpita, G. Wahlenberg, Noy. Act. Reg. Societ. Scient. Upsal., vol. viii, 
p. 95, 1821. 
CYCLOLITES NUMISMALIS, Hisinger, Leth. Suec., p. 100, tab. xxviii, fig. 5, 1837. 
PaLmocycius porpita, Milne Edwards and Jules Haime, Introd., p. xlvi, 1850.—Polyp. 
Foss. des Terr. Palaeoz. (Arch. du Mus., vol. y.), p. 204, 1851.— 
Aun. des. Sc, Nat., 3d ser., vol. xv, p. 110, 1851. 
Corallum discoidal ; its under surface flat, covered with a strong epitheca, presenting 
concentrical wrinkles, and completely free, or provided with a conical, curved, flat 
