36 J. E. Marr — Lower Palceozoic Rocks of Settle. 



by the names given to similar beds in the Lake District, with which 

 they have already been correlated, or ought, in our opinion, to be so.^ 



A. Coniston Limestone series. — These beds are largely developed in 

 the neighbourhood of Austwick. The probable succession is as follows : — 



1 . Calcareous blue shales, weathering olive-brown. 



2. Ashes. 



3. Blue, shivery shales. 



4. Blue, flaggy, Brachiopod shales. 



Conglomerate of succeeding series. 



The calcareous blue shales (1) are well seen at the angle of the road 

 below Norber Brow, where they are very fossiliferous. "We have 

 obtained from this locality the following fossils : — 



Biplngraptus (like pristis, His.). Cybele Loveni, Linnrs. 



Dicelloffraptus anoeps, Nich. Lichas laxatus, M'Coy. 



Stenopora sp. Turrilepas. 



Tentaculites anglicus, Salt. Phacops [Pteryffnmetopus) sp. 



Ateleocystites sp. Leptcena transversalis, "Wahl. 

 Trinudeus seticornis, His. , , sericea, Sow. 



Dindyniene ornata, Liunrs. ?^ Orihisina sp. 



The same beds appear to be represented in a stream south of "Wharfe. 

 From this locality fossils have been collected by the Kev. A. Pagan, 

 amongst which are — 



Ateleocystites sp. 



Phacops [Pterygometopus) sp. 



similar to those of Norber Brow. 



The ashes (2) have as yet not furnished us with any fossils. 

 The blue shales (3) occur at Wharfe Mill Dam, and near a barn on 

 the other side of the lane. In them we have found : — 

 Trinudeus seticornis. His. 

 Illcsnus Pavisii, Salt. 

 Calymene Plumenbachii, Brongn. 

 Leptcena t?-ansversaHs, Wahl. 



The blue shales (4) which occur immediately below the conglomerate 

 of Valentian age have yielded, as already stated, Ortliis testudinaria, 

 Dalm., along with a species of Strophomena. 



B. StocMale Shale Series. — I have nothing to add to the remarks 

 made upon these beds, except to give a fuller list of fossils, which 

 includes — 



Petraia, sp. 



Phacops elegans, Boeck & Sars. 



Cheirurus bimucronatus, Murcti. 



lEncrinurus punctatus, Briinn.. 



Leptcena quinquecostata, M'Coy. 

 All these occur in the thin bed of hard calcareous mud stone, which 

 has been described as the zone of Phacops elegans, and which is almost 

 entirely made up of fragments of Trilobites. 



C. Lower Coniston Flags. — These beds immediately succeed the 

 Phacops elegans zone of the preceding series, and are well developed in 



1 A fine specimen of Dindymene was discovered by Mrs. T. McK. Hughes, which 

 is unfortunately somewhat distorted by cleavage. Until other specimens are found we 

 refer it provisionally to B. ornata, Linnrs., though it will probably have to be separated 

 eventually. Only eight body-rings occur. 



