1848.] SALTER ON FOSSILS FROM THE STINCHER RIVER. 13 



2. Note on the Fossils from the Limestone on the Stincher River, 

 and from the Slates o/" Loch Ryan. By J. W. Salter, Esq., 

 F.G.S. 



The fossils from the limestone are decidedly Lower Silurian ; and I 

 would identify them at once as belonging to the same epoch — pro- 

 bably the same bed — as those which Mr. Nicol brought from Peebles- 

 shire ; although, with the exception of an Orthis and a Trilobite, 

 there are no fossils common to the two collections. In the Peebles- 

 shire locality, Trilobites in plenty, with Cephalopods and Brachio- 

 pods, were the characteristic fossils ; in this case we have only spiral 

 shells, an Orthis and a Trilobite. As however they were all in both 

 cases obtained from a very limited area, such a difference does not 

 make it less probable that they belonged to the same strata ; it is 

 merely a local peculiarity, and may perhaps in the present case indi- 

 cate a less depth of water. 

 The list is as follows : — 



Pleiirotomaria Moorei, new species. 



, another species, much depressed. 



latifasciata, Portlock ? 



Murchisonia seal arts, new species. Common in the Bala limestone. 



Euomphalus. A large species that may be E. qiialteriatus^ Schloth. 

 (imperfect) , 



Euo7nphaliis 1 Large reversed species ; rather common, but imper- 

 fect; its shape reminds us of the large Madurea, Hall, from 

 America. 



Orthis confinisy new species. 



Illcenus Davisii, Salter. 



The last two species are those found also in Peeblesshire ; the 

 fragment referred to Illcenus Davisii in Mr. Nicol's paper being pro- 

 bably this species ; it has narrow body-rings. 



None of the species brought by Prof. Sedgwick and Mr. Moore 

 from the sandstone of Girvan Water appear to occur in this limestone. 

 The fossils of the red slate on Loch Ryan are Graptolites, and 

 Euomphalus furcatus, M'Coy, a species also found in the black 

 Llandeilo flags of Wexford and Cardiganshire. The same Graptolite 

 occurs in the black slates of Loch Ryan and the black shales of Wex- 

 ford and S. Wales ; one in the red slate is identical with G. pristis, 

 Portlock, from Tyrone. Taking the two bands of slate together, we 

 have — 



Euomphalus furcatus^ M*Coy. 



Graptolites folium, Hisinger . 



—pristis, Hisinger [as figured by Portlock*.] 



tenuis, Portlock. 



ramosus. Hall. 



sextans. Hall. 



tcenia, new species. 



* The species so named by Portlock is possibly not that of Hisinger ; some spe- 

 cimens appear identical with G. mucronatiis, Hall. 



