﻿PLATE XXXIII. 



Tri^onia Meriani, Ag. Coral Rag, Pickering. (Page 167.) My collection. 

 „ Calcareous Grit, Weymouth. My collection. 



tenuicosta. Lye. Inf. Oolite, Walditch. (Page 160.) Coll. Col. 

 Mansel-Pleydell. 

 ,, Inf. Oolite, Bradford Abbas. My collection. 



hetiiisphcBrica var. greguria. Lye. Appleby, N. W. Lincolnshire. 

 (Page 174.) Coll. Rev. J. E. Cross. Also my 

 collection. 



