On the Palaeontology of County Dublin. 181 



Fragments of shells were also observed at other places on the 

 Dublin Mountains in similar deposits, the particulars of which are 

 described by the Rev. M. H. Close in the article referred to. 



Fragments of marine shells have also been collected from coarse 

 sand a little to the east of Glcnnasmole, Townland of Corrageen, 

 at about 600 feet above the sea level,* and form a conglomerate 

 of drift pebbles, cemented together by Arragonite (Carbonate of 

 Lime) a little south of Fort or Bohernabreena bridge. 



At Howth marine shells have been collected and described by 

 Dr. Scouler from the gravel deposits there,t and Dr. Oldham 

 gives a list of others from similar deposits at Killiney, in the 

 County of Dublin, and Bray, County of Wicklow.'J 



The following species were identified by Dr. Scouler from 

 Howth :— 



Turritella (terebra) communis. 



(Turbo littoreus) Littorina littorea (Periwinkle.) 



(Nerita littoralis) littorina littoralis. 



Buccmuiii undatum. 



Cardium edule. 



Cyprina Islandica. 



Pecten varius. 



Those named by Dr. Oldham from Killiney, &c, being— 



Ostrea edulis. 



Tellina solidula. 



Pecten opercularis, 



Pullastra decussata. 



N ucula oblonga. 



Astarte (Gaireusis) elliptiea. 



Corbula nucleus 1 



Saxicava rugosa. 



The only remaining fossils to notice are those of Mammalia, 

 found in Pleistocene deposits of freshwater shell marl immediate- 

 ly below the Peat Bogs. 



The great Irish deer, Megaceros Hibernicus, so frequently found 

 in these deposits in Ireland, evidently existed formerly in con- 

 siderable numbers in the neighbourhood of Dublin. Professor 

 Oldham, in a paper read before the Geological Society of Dublin, 

 in 1847.§ records the discovery of the remains of at least thirty 



♦ Journal Geol. Soc. of Dublin, vol. vi.. p. 144. j Ibid, vol. i., p. 270. 



X Ibid, vol. iii, p. C9. § Journal Geol. Soc. of Dublin, vol. lit. 230 (1348.) 



