Geological Socvety. 483 
3. ‘A Comparative and Critical Revision of the Madreporaria of 
the White Lias of the Middle and Western Counties of England, 
and of those of the Conglomerate at the Base of the South-Wales 
Lias.” By Robert I’. Tomes, Esq., F.G.S. 
After referring to previous memoirs on the subject by MM. 
Tawney, C. Moore, Tate, and Bristow, and to the conflicting con- 
clusions arrived at by those geologists, the author insisted that the 
Madreporaria are not necessarily contemporaneous with the beds in 
which they are found imbedded. He took exception to some of 
the identifications of these forms by Dr. Duncan, and suggested that 
their nearest analogues are to be found in the St. Cassian beds. 
The few and imperfect corals of the White Lias of Warwickshire, 
the author believes to have resemblances with the coral fauna of the 
Sutton Stone on the one hand, and the St. Cassian beds on the other. 
The Mollusca found in the same beds, however, are those of the 
zone of Ammonites angulatus. 
While the Brocastle Conglomerate is, according to the author, a 
local deposit with uncertain relations, the Sutton Stone is a much 
more regular stratum, and is quite distinct from the conglomerate 
which immediately overlies it, and which is seen at Southerndown. 
He regarded the Sutton Stone as the equivalent of the White Lias, 
and of Rheetic, not Liassic age. 
The revised list of corals found in the St. Cassian beds, the White 
Lias, the Sutton Stone, and the Brocastle Conglomerate respectively, 
shows, according to the author, that nearly all the White-Lias forms 
occur at St. Cassian; that a certain number of the corals of those 
two formations occur also in the Sutton Stone, but that none of 
them occur at Brocastle ; and, furthermore, that the coral faunas of 
Sutton are quite distinct. 
In conclusion, the author contested the views of the late Mr. C. 
Moore concerning the existence of a series of conglomerates below 
the base of the Sutton Stone, and insisted that the presence of a 
Hettangian molluscan fauna in these beds and the White Lias is not 
sufficient to counterbalance the evidence of Rheetic affinities afforded 
by the corals. The Brocastle Conglomerate, however, contains corals 
with Liassic affinities. 
Detailed descriptions of the new species of corals formed the 
conclusion of the paper. 
April 2, 1884.—Prof. T. G. Bonney, D.Sc., F.R.S., 
President, in the Chair. 
The following communication was read:— 
“On a new specimen of Megalichthys from the Yorkshire Coal- 
field.” By Prof. L. C. Miall, F.G.S. 
A large and unusually complete example of this fish was recently 
found in the roof of the Halifax Hard bed, at Mr. 8S. B. Ellison’s 
Firebrick works, Idle, near Leeds. The fossil is in good preserva- 
