TBANSACTIONS OF SECTION C. 535 



they still bear on their outer surface. In the interior, the presence of the shells 

 is still to be traced. Their history appears to be that the cavities made by the 

 boring shells were first filled with limonite, subsequently converted into carbonate 

 of iron and eventually into hematite. Last of all, the enclosing coral has been 

 entirely removed by the infiltration of water charged with carbonic acid. This last 

 process has probably taken place since the emergence of the beds from below the 

 sea-level. The Northampton sands have been fully described by Mr. Samuel 

 Sharp, F.G.S., in the 'Quart. Journ. of the Geological Society.' — Vol. xxxiv. 



3. Notes on some new species of Irish Fossils. By "William Helliee Baily, 

 F.L.S., F.G.8., M.B.I.A., Sfc, Acting Palaeontologist to the Geological 

 Survey of Ireland. 



A new species of starfish was described by the author of this paper, under the 

 name of Palasterina Kinahani, from Lower Silurian strata of Caradoc-Bala age, 

 rocks on shore near Bannow, county of Wexford ; also two new species of Cepha- 

 lopod shells from Carboniferous limestone, under the following names — 



Goniaties Leesoni, townland of Tomdeely South, county of Limerick ; 



Orthoceras Clarkii, townlands of Boohyle South and Doohybeg, county of 

 Limerick. 



