288 BRITISH FOSSIL CORALS. 
the visceral chambers are occupied by large oblique vesicles. Height of the corallum 13 
or 2 inches ; diameter of the calice often 3 inches or more; depth almost 1 inch. 
Wenlock Edge, Benthall Edge, Dormington Wood, Wren’s Nest near Dudley. Gothland. 
Specimens are in the Collections of the Geological Society of London, of the Museum 
of Practical Geology, of the Bristol Museum, of Mr. Fletcher, Mr. John Gray, of M. 
Bouchard-Chantereaux, of MM. de Verneuil, D’Archiac, &e. 
This species is easily distinguished from O. swbturbinata’ and O. Murchisoni,’ by its 
short, cyathoidal form. It much resembles O. grandis,’ in which, however, the calicular 
margin is more lamellated, the septal fossule less developed, and the interseptal spaces 
filled with vesicles that are apparent exteriorly as well as in the interior of the corallum. 
The fossil of the Silurian formation of Ireland, which Professor M‘Coy* refers to the 
Cyathophyllum turbinatum, Goldfuss, probably belongs to this species. It is found in 
various localities of the counties of Galway, Kildare, Mayo, and Dublin. 
2. OmpHyMA suBTURBINATA. ‘Tab. LXVIII, figs. 1, la, 14, 1c. 
MADREPORA SIMPLEX, TURBINATA, &c. (pars), Fougt, Amen. Acad., vol. i, tab. iv, fig. 3 
(Cet. excl.), 1749. 
= TURBINATA (pars), Hsper, Pflanz. (Petref.), tab. ii, fig. 4; tab. iii, fig. 5. 
TURBINATED MADREPORITE, Parkinson, Org. Remains, vol. ii, pl. iv, fig. 1, and perhaps 
also fig. 3, 1808. 
TURBINOLIA VERRUCOSA and ECHINATA, MHisinger, Anteckningar, vol. vy, p. 128, pl. viii, 
figs. 5 and 6, 1831. 
= TURBINATA, var. VERRUCOSA and ECHINATA, Hisinger, Leth. Suec., p. 100, 
tab. xxviii, figs. 7 & 8, 1837. 
CyaTHOPHYLLUM TURBINATUM, Lonsdale, in Murchison, Silur. Syst., p. 690, pl. xvi, figs. 11, 
lla, 1839. 
— — FKichwald, Sil. Syst. in Esthland, p. 200, 1840. 
— SUBTURBINATUM, D’ Orbigny, Prodr. de Paléont., vol. i, p. 47, 1850. 
CaNINIA TURBINATA, M‘Coy, Brit. Paleeoz. Foss., p. 28, 1851. 
OMPHYMA SUBTURBINATA, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palzeoz. 
(Arch. du Mus., vol. v), p. 401, 1851. 
Corallum tall, straight, or slightly bent at its basis, cylindro-turbinate, with a slender 
peduncle, and presenting round its under half large radiciform appendices. Accretion 
ridges of the wall in general well developed ; epitheca very thin. Calice circular, not very 
deep; its edge rather thick and not lamellated. Central smooth space of the upper tabula 
small; septal fossule smaller, and not as deep as in O. turbinata : septa (80) delicate, and 
somewhat unequal alternately. A vertical section shows that the tabulee are very large, 
1 See tab. Ixviii, fig. 1. 
te 
See tab. Ixvii, fig. 3. 
’ Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaoz., p. 403, 1851. 
4 Syn. of Sil. Foss. of Ireland, p. 61, 1846. 
