^^^' 55'] BEDDED KOCKS OE COUNTY WATEEFORD. 771 



possess a heteropic type of development and a faunistic facies allied 

 to that of Eastern Europe. Volcanic activity accompanied their 

 deposition. 



No Middle or Upper Bala sedimentary beds have been recognized, 

 but it is probable that Arenig beds are present, though as yet 

 palaeontological evidence is wanting. 



I wish especially to express my thanks to Sir A. Geikie for 

 permission to examine the Survey Collections in Dublin, and my 

 indebtedness to Mr. McHenry, of the Irish Geological Survey, for 

 much valuable help and attention. 



EXPLANATION OF PLATE XLIX. 



Trilobites from the Waterford Coast. 



Fig.l. Bemopleurides Salteri, sp. nov. A slightly compressed head-shield 

 without free cheeks. X 4. In the Dublin Museum. 



2. Do. Thorax. X 4. In the Dublin Museum. 



3. Do. Head-shield shortened by compression. X 4. In the Dublin 



Museum. 



4. Bemopleurides Fortlochi, sp. nov. Head-shield without free cheeks, 



X 3. In the Dublin Museum. 



5. Bemopleurides tuherculatus, sp. nov. A slightly distorted glabella. 



X 2. In the Woodwardian Museum. 



6. Cybele tramorensis (Eeed). Imperfect head-shield. x 2. In the 



Dublin Museum. 



7. Cyhele McHenryi, sp. nov. Imperfect head-shield. X 4. In the 



Dublin Museum. 



8. Cybele sex-tuherculata, sp. nov. Imperfect head-shield. X 4. In the 



Dublin Museum. 



9. Encrinunis fallax, sp. nov. Imperfect head-shield, x 4. In the 



Dublin Museum. 



10. Do. Free cheek. X 6. In the Woodwardian Museum. 



11. Do. Pygidium. X 4. In the Dublin Museum. 



12. Do. Complete young individual. X 4. In the Dublin Museum. 



13. Asaphus Haughtoni, sp. nov. Perfect pygidium. Nat. size. In the 



Dublin Museum. 



14. Tramoria punctata, gen. et sp. nov. Portion of head-shield. X 2. 



In the Dublin Museum. 



15. Do. Cast of portion of head-shield. X 2. In the Dublin Museum. 



16. Do. Imperfect free cheek. X 2. In the Dublin Museum. 



Discijssioi^. 



Prof. SoLLAs, from a personal knowledge of the district, could 

 bear testimony to the faithf al descriptions of the Author, and com- 

 plimented him on a very complete piece of work. The suggested 

 comparison of the Tramore Limestones with the Orthocerenkalk of 

 the Baltic was of extreme interest, for hitherto the distinction 

 between the British and Baltic provinces during Lower and Middle 

 Ordovician times had been regarded as so sharp that authors had 

 invented a special isthmus to account for their separation. No 

 doubt the palseontological evidence, when presented in detail, would 

 support the Author in his contention ; but, for the present, it might 

 be noted that Amphion, though a rare genus, had always been 



