1866.] 



JUKES — OLD RED SANDSTONE AND DEVONIAN. 



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this anticlinal, 2 miles north- 

 west of the town of Skibbe- 

 reen, in a lane running by the 

 E. C. Chapel of Abbeystrowry, 

 in the townland of Mohanagh 

 (just under the name Clashee- 

 nagnaw, as engraved on the 

 one-inch map), that Mr. Salter 

 and the late James Elanagan 

 and I met with the large casts 

 of CucuUcea, and other fossils 

 mentioned in a paper by Mr. 

 Salter and myself, published 

 in the ' Journal of the Dublin 

 Geological Society,' vol. vii., — 

 " rounded, sharply keeled, and 

 trilobated species of Bellero- 

 phon " were found here, as well 

 as a large Lingula, the large 

 CucuUcea, called afterwards by 

 Mr. Salter CucuUcea Griffithii, 

 abundance of Avicula Damno- 

 niensis and Rhynclionella pleu- 

 roclon, and other shells. 



10. The Bantry Bay Trough. 

 — On the northern side of the 

 Mizen Head anticlinal lies the 

 trough of Carboniferous Slate, 

 the western extension of which 

 runs down Dunmanus Bay. 

 On the northern side of that 

 trough we again come back to 

 the ridge of Old Red mentioned 

 before as stretching from 

 Knockadoon Head to Sheeps 

 Head, and forming the south- 

 ern margin of the North Cork 

 Old Eed Sandstone district. 

 The exposure of Old Eed Sand- 

 stone in this ridge is very nar- 

 row just south of the town of 

 Bantry, the beds being nearly 

 vertical, with almost vertical 

 beds of Carboniferous Slate 

 (containing Coomhola Grits) on 

 each side of it. The inter- 

 vening space of red slates and 

 grits is barely a mile wide in 

 one part. 



To the northward of this lies 



