Vol. 65.] CARBONIFEROUS LIMESTONE OF COUNTY CLARE. 583 



EXPLANATION OF PLATES XXVI & XXVII. 



[All the figures are of the natural size, unless otherwise stated.] 



Plate XXVI. 



Avonian Brachiopods from County Clare. 



Fig. 1 a. Spirifer konincJci, sp. nov., dorsal view. Syringothyris Zone, Cratloe. 



1 b. The same specimen, ventral view. (See p. 574.) 



2. Athyris fflabristria (P hill.), Syringothyris Zone, Tulla. (See p. 572.) 



3. Dielasma aff. Jcingi, de Kon. Syringothyris Zone, Crusheen. (See 



p. 571.) 



4. Athyris lamellosa (L'Eveille). Clathratus subzone, Gourna River. 



(See p. 573.) 



5. Athyris hibernica, nom. nov. Syringothyris Zone, Cratloe. (See 



p. 573.) 



6. Spirifer afF. clathratus, M'Coy & Vaugban. Syringothyris Zone, 



Cratloe. (See p. 574.) 



7. Spirifer attenuatus, J. de C. Sow. Syringothyris Zone, Cratloe. (See 



p. 574). 



Plate XXVII. 

 Avonian Corals from County Clare. 



Fig. I. Nematophyllum (Lithostrotion) minus, M'Coy. Much enlarged. 

 S 2 , Ballyvaghan. (See p. 580.) 



2 a. The same. Natural size. 



2 b. Vertical section of one corallite. 



3. Clisiophyllid Lithostrotion,V&\ighan. D,, Ballyvaghan. (Seep. 581.) 



4. Zaphrentis sp. S 2 , Ballyvaghan. (See p. 577.) 



5. Careinophylliim sp. S 2 , Ballyvaghan. (See p. 581.) 



(i. Dihimophyllum aff. \^. D 2 , Glencolumbkille. (See p. 581.) 



7. Bensiphyllum sp. I) 3 , Corrofin. (See p. 578.) 



8. Campophyllum cylindricum (Scouler). Horizon y, Sixmilebridge. 



(See p. 578.) ' 



9. Zaphrentis omaliusi, var. densa, Carr. Z v Gourna River. (See 



p. 576.) 



10. Campophyllum sp. S 1; Crusheen. (See p. 579.) 



11. Zaphrentis vaughani, sp. nov. Z v Gourna River. (See p. 577.) 



12. Caninia aff. cornucopia, Mich. D 3 , Busby Park House. (See p. 579.) 



13. Biphyphyllwm aff. subibicinum (M'Coy). D 2 , Glenquin. (See p. 580.) 



14. Caninia cornucopia, Mich. Calyx. Horizon y, Sixmilebridge. (See 



p. 579.) 



Discussion. 



The President (Prof. Sollas) congratulated the Author on his 

 earnest and long-continued labours having culminated in so suc- 

 cessful a conclusion. It was extremely gratifying to find that the 

 facts in County Clare were in general harmony with those observed 

 on the banks of the Avon ; confidence in the zonal method and in the 

 particular system of zones proposed for the Carboniferous Limestone 

 was thereby strengthened. The discovery of the Waulsortian fauna 

 in its proper place, between the Visean and the Tournaisian, was a 

 very fortunate circumstance ; it added to the completeness of the 

 British series in a locality as far west as the zoning of the Carboni- 

 ferous could be carried in the Old World. The next step must be to 



