PLATE VI. 



CRETACEOUS SPECIES. 



Fig. 



1 to 2. Terebratula biplicata, var. Dutempleana, D'Orb., from tlie Red Chalk of 



Hunstanton. 

 3 to 5. „ }> 5J Upper Green Sand, Cambridge. 



o\ a 



specimen exhibiting remains of 

 colour. 

 7. ,, ,, „ Upper Green Sand, Cambridge. 



interior of dorsal valve. 

 S, 9. „ J3 ); from Cambridge ; intermediate 



shape between T. biplicata 

 (type) and the var. Dutempleana. 

 10 to 13. ,, ., var. obtusa, Sow. 



14 to 28. ,, ,, Different shapes from the Upper Green Sand of 



Cambridge. 

 20, 30. „ „ from the Gault, Eolkstone. 



31, 32. ,, ,, Two examples, from the Lower Chalk of Cambridge 



and Lewes. 

 33 to 42. ,, ,, {Brocchi). A series of specimens and varieties from 



the Upper Green Sand, near War- 

 minster, and which appear to ap- 

 proach most to the Italian figure. 

 43, 44,. „ „ (T. faba, Sow.) 



45 to 40. ., „ ? Stated to be from Lower Green Sand, near Devizes 



by Mr. Cunnington. 



