﻿PLATE XXVI. 



Streptorhynchus crenistria, Phillips. A very large example from the Carbonife- 

 rous limestone of Kendal, in the collection of the 

 Geological Society. 



— FromDenwell, Northumberland, and collection of Mr. 



Tate. 2a, a fragment of the. shell magnified. 



— — From the Carboniferous limestone of Lime-kilns 



above Queensferry, Fifeshire, and collection of the 

 late H. Miller. 



— — = 0. caduca, M'Coy. ' Synopsis/ tab. 22, fig. 6. I 



have examined the original example, which is 

 nothing more than a flattened valve of A. crenis- 

 tria. Prom Rahoran, Fivemiletown, Ireland, and 

 collection of Sir R. Griffith. 



— ■ — Interior of the ventral valve from the Carboniferous 



shell of Hook Point, county of Wexford, in the 

 collection of the Geological Society. 



— — Interior of the dorsal valve, from Denwell, North- 



umberland, collection of Mr. G. Tate. 



