52 



Mr. C. Lap worth on the Geological 



Climacograptus normalis, Lapw. 

 Retiolites perlatus, Nich. 

 Diplograptus vesiculosus, Nich. 



folium, His. 



Hughesi, Nich. 



tamariscus, Nich. 



sinuatus, Nich. 



modestus, Lapw. 



Dimorphograptus Swanstoni, 



Lapw. 

 Cephalograptus cometa, Gem. 

 Monograptus attenuatus, Hopk. 

 tenuis, Port!. 



Monograptus Sandersoni, Lapw. 



argutus, Lapw. 



gregarius, Lapw. 



concinnus, Lapw. 



leptotheca, Lapw. 



cyphus, Lajnv. 



Hisingeri, Carr. 



Sedgwicki, Portl. 



spiralis, Geinitz. 



hmbriatus, Nich. 



triangulatus, Harkn. 



Rastrites peregrinus, Barr. 

 fugax ?, Barr. 



Higher strata, equivalent in all probability to the Gala and 

 Tarannon formations of Britain, occur near Teiveshilly and 

 other localities on Strangford Lough. From these Mr. Swan- 

 ston* and the officers of H.M. Geological Survey t have 

 collected 



Monograptus Hisingeri, Carr. 



M'Coyii, Lapw. 



galaensis, Lapw. 



riccartonensis, Lapw. 



crispus, Lapw. 



Monograptus priodon, Brown. 



proteus, Barr. 



spiralis, His. 



turriculatus, Barr. 



Barrandei, Huess. 



From the higher (Llandovery) portions of his Pomeroy 

 rocks, Portlock figures in his well-known work £ the following 

 forms : — 



Monograptus turriculatus, Barr. 

 Diplograptus folium, His. 



Monograptus Sedgwicki, Portl. 

 tenuis ?, Portl. 



together with others it is as yet impossible to identify. I have 

 myself collected from these beds, in addition, 



Monograptus gregarius, Lapw. Monograptus discretus, Nich. 



Mr. Swanston has lately forwarded me from the same beds 



Monograptus cyphus, Lapw. 

 attenuatus, Hopk. 



Monograptus leptotheca, Lapw. 

 intermedins, Carr. 



Similar forms are present at Lesbellaw § and other locali- 

 ties in the west of Ireland. 



Sweden. — The Trinucleus (Upper Bala) Schists of Scania 

 and Westrogothia are followed immediately by the Brachio- 

 pod-Schist — strata very prolific in Testacea, but as yet appa- 

 rently barren of Graptolites. They stand approximately in 

 the place of the British Lower Llandovery and are succeeded 



* Swanston, loc. cit. supra. 



f Baily, Explanation of Sheets, Geological Survey of Ireland. 



| Portlock, Geological Report Tyrone, plate xix. 



§ Ibid. 



