Hind — Notes on the Homotaxial Equivalents^ 8^c. 101 



The actual junction of the shale series and the Upper Limestone is 

 not seen ; but there cannot be much distance between the limestone at 

 Durnish Point and the beds on the east of Poynes Island. Tlie 

 junction runs due north from the mass of limestone south of the 

 railway to Sturamus Island, so that the base of the shale series must 

 cross the Shannon very little to the east of Foynes Island. 



And that this is the case is probable from the occurrence of a bed 

 of shales with calcareous bullions, very rich in Goniatites, recalling in 

 appearance those found immediately above Carboniferous Limestone 

 at Lisdoonvarna. 



On Foynes Island, at Gammarel Point, and half a mile north on 

 the shore, are black shales with bullions containing the following : — 



Nomismoceras sjnrorbis. Orthoceras Steinhaueri. 



Glyphioceras diadema, 0. Koninckianum. 



G. PMlUpsi. Orthoceras aciculare. 



G. reticulatum. Posit 



G, Davisi, P. minor. 



Dimorphoceras Gilhertsoni. Macrocheilina reticulatum. 



B. descrepans. 31. Gibsoni. 



Ccdonautilus quadratus, M. elegants. 



The succession from the landing-stage near Foynes House was as 

 follows : — 



Hard nodule shales, olive coloui". 



Black shales with Glyphioceras s])irale^ G. diadema^ Posidoniella 

 Icevis. 



Shales harder and more calcareous than above, yyith. Pteritiopecten 

 papyraceus. 



And below high- water mark at dip 45° on 1-inch map : — 



Black shale with bullions, with the fauna mentioned above. 



At the north of the island the series shows from above down- 

 wards : — 



Grits and shales. 

 Black shales. 



Flag stones and olive grits. 

 Black shales. 

 Olive grits. 



Grits and shale parting. 



Black shales with fine bullions. 



