CONCLDDING REMARKS. 



225 



The faunn on Foyiies Island is as follows : 



Posidonomya BecJieri. 

 Avicwlopecten papyraceus. 

 Orthoceras minimnm. 



Goniatites [Glyphioceras] ' reticidatvs. 



,, Lisferi [Gasirioceras circuwjtlirntili' 

 Naiitilii.i iuhercnlatus [Vj. 



The following divisions of the Carboniferous Hystcm of Ti-eland arc those at 

 present recognised by the Geological Survey, but it seems to l)e admitted that some 

 of them need re-\nsion, and this they will doul)tless undergo in course of time. 



Middle Coal Measures. 



Lower Coal Measures. 



Millstone Grit. 



Yoredale Series. 



Upper Carboniferous Limestone. 



Middle 



Lower „ ,, 



LoAver Limestone Shale or Basement Beds. 



The list given below supplies the localities and hoi'izons of the fossils described. 

 I am indebted to Mr. Alexander M'Henry, M.R.I.A., and to Mr. Henry J. 

 Seymour, B.A., F.G.S., for kindly verifying these, the former from the official 

 registers, the latter from the geological maps. 



Aljihalictiral List of ihr L( 



ilifip.9 referred to in fJw firer/iiiiKj Dcftrripfious of Fossils, 

 iritli their Horizons. 



' The names, etc., between square brackets are added by the writer. 



- The word " Carboniferous " after Lower, Middle, and Upper (Limestone) is omitted for the 

 sake of brevity. 



