﻿PLATE XXXI. 



Fig. 



1, 1 a, 2, 3, 10. Trigonia monilifera, Ag. Kimmeridge Clay, Weymouth. (Page 165.) 



My collection. 



2 a. „ „ Portion of the surface magnified. 



4, 5, 7, 8. „ hemisplicerica, Lyc. Inf. Oolite, Santon Bridge, near 



Appleby. (Page 174.) My collection. 

 6. „ „ Specimen with the costae fewer and larger. 



Inf. Oolite, Santon Bridge. My collection. 

 9, 9 a. „ Citlleni, Lyc. Inf. Oolite, Millepore bed, Cloughton. (Page 



173.) My collection. 



