CORALS FROM THE SILURIAN FORMATION. 285 
Specimens are in the Collections of the Bristol Museum, of the Museum of Practical 
Geology, of the Geological Society of London, of Mr. Bowerbank, M. Bouchard-Chantereaux, 
and M. de Verneuil. 
This coral is remarkable by its mode of gemmation, exclusively calicinal, and by the 
everted form of its calices. 
It most resembles C. regium' and C. helianthoides,’ but its septa are thicker and less 
numerous than in those large corals. 
6. CyaTHoPHYLLUM FLExuosum. Tab. LXVII, figs. 2, 2q. 
Maprepora composita, &c., Fougt, Amen. Acad., vol. i, p. 96, tab. iv, figs. 5 and 13, 1749. 
_ FLEXUOSA, Linné, Syst. Nat., edit. 12, p. 1278, 1767. 
CaRYOPHYLLIA FLEXUOSA, Lonsdale, in Murchison, Sil. Syst., p. 689, pl. xvi, fig. 7, 1839. 
(Not Lamarck.) 
DipHyYPHYLLUM FLEXUOSUM, D’ Orbigny, Prodr. de Paleont., vol. i, p. 38, 1850. 
CYATHOPHYLLUM FLEXUOSUM, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzeoz. 
(Arch. du Mus., vol. v), p. 386, 1851. 
Corallum dendroid ; gemmation calicular. Corallites cylindrical, tall; epitheca feeble ; 
costal striae not numerous (about 20). Diameter of the large individuals about 13 
line or 2 lines. 
Wenlock Shale, Malvern. Ferriter’s Cove and Dingle, Kerry (M‘Coy). Gothland. 
Specimens are in the Collection of the Geological Society of London. 
This species much resembles C. parricida,’ in which, however, the corallites are 
turbinate and the septa less developed. 
7. CYATHOPHYLLUM TROCHIFORME. 
SrREPHODES TROCHIFORMIS, M*Coy, Ann. and Mag. of Nat. Hist., 2d ser., vol. vi, p. 275, 
1850. 
— M‘Coy, Brit. Paleeoz. Foss., p. 31, pl. 18, fig. 21, 1851. 
“ Corallum simple, slightly curved, widely turbinate ; average length one inch three 
lines, and width at mouth one inch one line, with irregular swellings of growth ; outer wall 
very thin, marked with equal lamellar sulci (6 in 3 lines at one and a quarter inch in 
diameter, or 83 all round); terminal cup very deep, conical, margin rounded, 
sides gradually sloping, lined by the thin alternately “longer and shorter uneven-edged 
lamella, the longest of which unite, and are irregularly blended at the centre, connected 
throughout by numerous curved transverse vesicular plates: horizontal section shows the 
same characters as the terminal cup, the alternate lamella extending about half way to the 
1 See tab. xxxii, figs. 1, 2, 3, 4. 2 See tab. xli, fig. 1. 3 See tab. xxxvil, fig. 1. 
38 
