558 ME. J. A. DOUGLAS ON THE [Nov. 1909, 



beds to be exposed being thin shales crowded with Syringothyris 

 aff. cuspidata and Chonetes cf. Jiardrensis. 



Lower Stratified Limestone (Z 2 — y). — These beds are best 

 seen in the vicinity of Sixmilebridge. West of Oilmill Bridge 

 there is a considerable tract of land free from Drift, in which are 

 exposed dark-grey impure limestones, often highly cleaved. 



These beds contain Zaphrentis Jconinchi, C'aninia cornucopia;, 

 Michelinia favosa, and Campliopliyllum cylindricum in abundance, 

 but brachiopods are not common. (Beautiful examples of weathered 

 coral-calices can be obtained from this locality.) Several small 

 quarries are also to be noted on the south-east of the road opposite 

 the Roman Catholic chapel. 



Somewhat similar beds are again seen in the Owengarney River 

 section, north of Sixmilebridge. From Annagore Bridge they 

 have an average dip of 15° to the north by west, as far as Bally- 

 mulcashel Bridge, south of Castle Lake. They are here highly 

 fossiliferous, containing PJiillipsia gemmidifera, Sp/irifer aff. cla- 

 ihratus, Leptcena analoga, Syringothyris laminosa, OrtJiotetes 

 crenistria, Chonetes cf. Jiardrensis, AtJiyris cf. glabristria, Caninia 

 cornucopia;, and Zaphrentis Jconincki. At the top of the hill west 

 of Ballymulcashel Bridge, they are seen to pass beneath the unbedded 

 limestone of the Syringothyris Zone, and the cherty beds dividing 

 the two zones may be traced far to the north-east. 



Lower Massive Limestone {Syringothyris Zone). — These 

 beds can be traced from Newmarket-on-Fergus north-eastwards 

 beyond Kilmurry. They are more easily examined, however, in 

 the neighbourhood of Cratloe, a small village about 4 miles north- 

 west of Limerick, where they crop out along the south of the 

 Slieve Bernagh anticline. The rock is here extensively quarried 

 for road-metal, and is rich in fossils, of which the following are 

 most abundant: — Vestinautilus carinifer, SolenocJieilus dorsalis, 

 Syringothyris cuspidata, Dielasma hastatum, Pugnax reniformis, 

 Spirifer attenuatus, Sp. pinguis, and Sp. Tconinchi. The dolomite 

 at the top of this zone is well exposed to the north of Cratloe 

 Castle. 



Upper Limestone (Seminula Zone). — Beds included in this 

 zone crop out in bare tracts of rock over the northern part of the 

 Barony. From Newmarket, or Bally car Railway -station, which is 

 situated on the cherty basement-beds, they can be followed up the 

 western side of Fin Lough to the crags south of Lough Caherkine ; 

 here a black compact limestone, with Lithostrotion martini, Pro- 

 ductus punctatus, and other common forms, is seen to pass into 

 an oolite, which is crowded with gasteropods and contains small 

 pebbles often measuring more than 2 centimetres in diameter. 



