560 MK. 0. A. DOUGLAS ON THE [Nov. I909, 



Though extensive tracts of bare rock are of local occurrence, fossils 

 are, as a rule, scarce. 



South of Jasper's Bridge, 2 miles to the west of Quin, there is 

 a considerable development of oolitic limestone, which seems to 

 occur at a higher level than that previously mentioned at Caherkine 

 Lough. Half a mile to the north, at Ballyglass House, lower beds 

 are seen containing a great abundance of chert ; the limestone is 

 here crowded with the bryozoan Hemitrypa. 



The following fossils were obtained from the district between 

 Kilbreckan Mine and Ennis ; Lithostrotion martini, Cyatho- 

 phyllum sp., Productus elegans, papilionaceous Ghonetes, and a 

 small convex Ghonetes cf. hardrensis. 



The road from Tulla to Ennis for about the first 8 miles is 

 situated on the Lower Massive Limestone, which everywhere 

 abounds in fossils. The following were obtained from Sandhill 

 Bridge : — Amplexus coralloides, Productus semireticulatus, Dielasma 

 hastatum, Productus aff. qtdncuncialis, Vestinautilus carinifer, and 

 Fenestella sp. 



Near Castletown Lough the dolomite and the basement cherty 

 beds of the Upper Limestone are met with, and from this point as 

 far as Ennis there is a fairly constant westward dip : a feature 

 due to the extension of the Slieve Aughty anticline. "West of 

 Ennis the Upper Limestone forms conspicuous rocky crags, beneath 

 the Coal-Measure escarpment. The rocks consist for the most 

 part of thickly-bedded, black and dark-grey, compact, crystalline 

 limestones, with an abundance of chert at several horizons. A 

 large quarry in the hill north of Inch Bridge affords an interesting 

 exposure near the base of the Lonsdalia subzone. The following 

 fossils are abundant at this locality : — Productus giganteus, Pr. 

 ' corrugato-hemisphericus ', Pr. striatus, Athyris expansa, Cyrtina 

 septosa, Alveolites septosa, Syringopora cf. geniculate/., Lithostro- 

 tion junceum, L. irregidare, Gyathophyllum regium, and Lonsdalia 

 duplicata. (The two last-mentioned forms occur near the summit 

 of the hill, but are apparently absent in the quarry.) 



Farther north, near Bushy Park House, still higher beds are met 

 with. These contain Zaphrentis ennisJcilleni, Z. oystermouthensis, 

 Densiphyllum sp., Ganinia aff. cornucopim, Productus punctatus, 

 Pr. sidcatus, and Athyris expansa, and are taken as representative 

 of the D 3 subzone. 



In a field west of the road leading down to Shallee Castle is a 

 dripping well, in which is exposed the junction between the lime- 

 stone and the overlying shales. 



(D) Barony of Inchiquin and the northern half of 

 Upper Bunratty. 



In this central area the outcrop of the limestone narrows to its 

 smallest limits, and the complete succession can be traversed from 



