120 Geological Society. 



regarded as an ancestor of Pliosaurus, since teeth undistinguishable 

 from those of the latter genus occnr in the Coralline Oolite. 



Finally it was concluded that the evidence brought forward was 

 sufficient to render necessary the abolition of the name Pliosauridae, 

 and the inclusion of Plesiosaurus and Pliosaurus in a single family. 



June 6, 1888.— W. T. Blanford, LL.D., F.R.S., 

 President, in the Chair. 



The following communication was read : — 



" On the Occurrence of Calcisplwrce, Williamson, in the 

 Carboniferous Limestone of Gloucestershire." By E. Wethered, Esq.. 

 P.G.S., E.C.S. 



The small hollow spheres, with varying forms of peripheral 

 appendages, described by Prof. Williamson as Calcisphcerce, were 

 found in the Carboniferous Limestone of Flintshire, and were 

 suggested by him to be possibly Foraminifera or the reproductive 

 capsules of some marine form of vegetation, althoiigh he admitted 

 that no forms hitherto discovered aiforded any definite support to 

 this hypothesis. Prof. Judd expressed a belief that the objects 

 were Eadiolaria; whilst Mr. Shrubsole discovered similar bodies in 

 the Mountain Limestone near Llangollen, and conjectured that the 

 described forms included both Foraminifera and Eadiolaria. 



The Author has discovered the Calcisjjhcerce in great numbers in 

 the Carboniferous Limestone of Gloucestershire. He discussed the 

 identity of certain calcareous rings '005 in. in diameter, seen in 

 sections of the limestone of Clifton, &c., with siliceous bodies which 

 he had described in a recent paper read before the Society, and gave 

 an account of the calcareous and siliceous forms which were both 

 referable to Calcispluera'. He commented upon the character of the 

 carbonate of lime of the calcareous bodies, which presented a granular 

 structure characteristic of the truly organic portion of the limestone, 

 and not a clear crystalline aspect like that of the infilling or replacing 

 calcite ; he concluded therefore that the tests had been originally 

 calcareous, and not siliceous replaced subsequently by carbonate of 

 lime. This was urged as a strong argument against regarding the 

 organisms as Eadiolaria, and the Author, whilst considering it 

 unwise to come to a decided conclusion, believed it safe to say that 

 they were Protozoa. 



June 20, 1888.— W. T. Blanford, LL.D., F.E.S., 

 President, in the Chair. 



The foD owing communications were read : — 



1. " On the Occurrence of Marine Fossils in the Coal-Measures of 

 Fife." By Jas. W. Kirkby, Esq. (Communicated by Prof. T. 

 Eupert Jones, F.E.S., F.G.S.) 



This paper recorded the discovery of fossils of good marine types 

 in the Fifeshire Coal-measures. . This coal-field is of limited extent. 



