102 Proceedings of the Royal Irish Academy. 



On the mainlancl west of Foynes Station, and behind the inn and 

 saw-mill, is a good section, which also extends along the south shore of 

 the Shannon. This shows an anticlinal with the following sequence : — 



Thick fine-grained grits and flags. 

 Gap. 



Calcareous mudstone not well bedded, .. .. 18 ft. 



Shale, 2 ft. 



Hard calcareous mudstone, . . . . . . 30 ft. 



Compact sandy shale, . . . . . . . . 10 ft. 



Peaty beds, 20 ft. 



And just north-west of the saw-mill is a section of shales with large 

 black bullions, low down, containing Glypliioceras diadema and the 

 variety with the coarse ribs and large umbilicus, Dimorphoceras Gil- 

 lertso7ii, Orthoceras lioninchianum. (PI. iv., fig. 2.) 



Baily (Memoir of the Geological Survey, Ireland, Expl. of sheet 142) 

 quotes Posidonomya Beeheri or F. vetusta from Poynes Island. I 

 was unable to find the former, which I should have expected to occur 

 in beds immediately on the top of the Upper Limestones ; but I fancy 

 that both the species mentioned were wrongly identified, Fosidoniella 

 l(Bvis and other species of this genus being mistaken for them. 



The goniatite Glyphioceras crmistria was evidently an error for 

 G. diadema and G. reticidatum. 



Similar fossils were found west of Shannagolden and Mount David. 

 A fairly extensive section is seen in the stream which runs due east 

 into Shannagolden, showing gritty beds and shales; but I did not find 

 the bullion-bed there, the section being higher up in the series. 



The similarity of the fauna occurring at Poynes Island and that 

 found near Lisdoonvarna is very striking, and points not only to a 

 similar horizon on each side of the basin, but also to the fact that the 

 top of the limestone series is practically the same in each place. 



West of Poynes, the Poynes coalfield succeeds the grits which lie 

 on the Upper Limestone Shales. Several fossil plants were collected 

 by the Survey ; and I venture to hope tbat these may be accurately 

 determined by Mr. Kidston at no distant date. 



At Eosscliffe, a locality south of the letter B in Ballynacally, 

 County Clare, on the one-inch Ordnance map, about three miles 

 north-west of Killadysart, the somewhat rare and important fossil 

 Clmnocardiola Footii occurs with Fterinopecten papyraceiis, Glyphioceras 

 reticidatum, Orthoceras, and Fosidonomya memhranacea. Chcenocardiola 

 Footii occurs also in the Coddon Hill beds. Lower Culm, at the base of 



