Stratified Rocks near Killarney and Duhlin. 167 



From Ferriter's Cove. 



Atrypa tenuistriata, Sil.Syst. pi. 1 2. f.3. Euomphalus perturbatus, Sil. Syst. 

 Avicula reticulata, lb. pi. 6. f.3. pi. 22. f. 15. 



. retroflexa, lb. pi. 5. f. 9. Leptaena lata, lb. pi. 5. f. 3. 



Cornulites serpularius, /(5. pi. 26. f. Terebratula bidentata, lb. pi. 12, 

 5-9. f. 13. 



Euomphalus funatus, lb. pi. 12. f. ■ Stricklandii, lb. pi. 



20. 13. f. 19. 



If we make a section across the Dingle peninsula from 

 Feilaturrive on the south to Brandon Bay on the north, we 

 find that the strata consist of a base of dark blackish gray 

 clay slate, the upper beds of which alternate with reddish 

 purple slate, some of which contain Silurian fossils ; these 

 strata are succeeded by red slaty conglomerates, alternating 

 with red and green slate and brown quartz rock, above which 

 are chloritic quartz rocks with alternating purplish and I'ed- 

 dish gray clay slate, similar in composition and character to 

 those of the Gap of Dunloe, and of that district generally. 

 Again, if we make a section along the west coast of the Dingle 

 peninsula from Fawn to Sybil Head, we find numerous fos- 

 siliferous beds, some of which have been noticed by Mr. Ha- 

 milton*, the true position of which has not yet been clearly 

 made out ; but from all tiie data I possess, I am inclined to 

 place them between the dark gray clay slate and the chloritic 

 quartzose rock. Hence I am of opinion that the chloritic 

 rocks of the Gap of Dunloe should be classed with the Silurian 

 system. 



With regard to the dark blackish gray clay slate which 

 forms the lowest member of the series in the Dingle penin- 

 sula, it is identical in lithological character with the dark 

 gray slate of theGatties mountains, which are situated directly 

 in the line of the strike in an eastern direction, as may be 

 clearly seen by reference to my Geological map ; and follow- 

 ing the same strike similar strata occur in the Shivnamanna 

 mountains of the county of Kilkenny, and also in the 

 slate district to the south of Waterford, where on the sea 

 coast at Knockmahon, and also at Tramore, fossils occur in 

 green chloritic metamorphic slate and quartz rock, belonging 

 to the lower Silurian strata or Caradoc sandstone f. These 

 fossiliferous beds are incumbent on the dark gray slate, in 

 which no fossils have as yet been observed. This dark gray 

 slate bears a striking resemblance in lithological character to 

 the dark gray clay slate of the Festiniog district of Merioneth- 



* See Journal of the Geological Society of Dublin, vol. i. p. 280, 

 j- The fossils discovered are Orthis radiatus, and several others of that 

 genus; so Belhrophon hilobatus, Atri/pa orbicularis?, &c. 



