1 68 



Hind: Carboniferous Geology. 



beds of the Cyathaxonia beds and the lowest bed of the Pendle- 

 side Series, is found high up in a pure hmestone, with a Visean 

 fauna at Little Island, Co. Cork. In Calcareous shales at 

 Old Head of Kinsale, Posidonomya becheri occurs in abundance. 



Similarly all through the West of Ireland, limestones with 

 a high Visean fauna are succeeded by beds with a typical 

 Pendleside fauna. Good sequences are to be seen at Foynes 

 Island, Lisdoonvarna, Cliffs of Moher, and in the neighbour- 

 hood of Ennis.'^ 



In the district of the Burren, in the North of Co. Clare, the 

 w^hole of the Carboniferous Limestone Series is exposed in 

 unbroken succession, and here it will be no very difficult task 

 to make out the zonal horizons, though quarries are few, and 

 the weathered surfaces will largely have to be relied upon to 

 furnish the fossils. I believe the district is already under 

 examination at the hands of competent geologists. 



Probably in Tyrone and at Cultra, Co. Down, beds very 

 low down in the Carboniferous Series occur, charactersed by 

 Modiola Macadamii, but these areas require reinvestigating 

 with our present knowledge of the distribution of Carboniferous 

 Corals. 



In North Devonshire occur a Series of Carboniferous beds, 

 known as the Culm. The district has been mapped and 

 described by Mr. Ussher. Mr. Newell Arber has published 

 papers dealing with portions of the Series from a standpoint 

 of the flora and fauna respectively, and Messrs. J. G. Hamling 

 and Inkerman Rogers have collected most carefully from the 

 various horizons exposed. 



Apparently resting on Upper Devonian rocks from which 

 specimens have lately been obtained by Mr. Hamling, doubt- 

 fully referred to Clymenia, are a series of Cherty beds and 

 Radiolarian Limestones, known locally as the Codden Hill beds. 

 These contain the following fauna : — 



THE CULM. 



Trilobites. 



Phillip sia leei. 



Griffithides acanthiceps. 



longispinus. 



Proetus Sp. 



minor, 

 cliffordi. 

 polleni. 



* Hind., ' Proc. Roy. Inst. Acad.', Vol. XXV., Sept. 13, No. 4. 



Naturalist, 



