﻿PLATE VI. 



Lyriopecten fibratus, n. sp. (Page 86.) 



Fig. 



1. Left valve of a large specimen, defective round the edges ; 1 a, superior view ; 



1 b, portion of surface enlarged. Lummaton. Champernowne Collection. 



Actinopteria ? Robertsii, n. sp. (Page 60.) 



2. Left valve, defective in front ; 2 a, portion of surface enlarged. 



My Collection. 



3. Another specimen showing the anterior wing ; 3 a, front view. 



My Collection. 



4. Another specimen showing the anterior wing, defective behind. 



Woodwardian Museum. 



Actinopteria hirundella, Whidbome, sp. (Page 61.) 



5. Left valve, defective above and in front (the hinge-margin being destroyed 



the amount of obliquity cannot be ascertained, but it is probably greater 

 than appears from the figure) ; 5 a, portion of surface enlarged. Wol- 

 borough. Museum of Practical Geology. 



6. Another specimen ; 6 a, portion of surface enlarged. Lummaton. Lee 



Collection, British Museum. 



Actinopteria musicata, n. sp. (Page 63.) 



7. Portion of a left valve ; 7 a, 7 b, portions of surface enlarged 



Vicary Collection. 



Actinopteria dilatata, Whidbome, sp. (Page 64.) 



8. Portion of a very large shell ; 8 c, portion of surface enlarged. Wolborough. 



Vicary Collection. 



9. 10. Two worn specimens from one slab ; 9 a, portion of surface enlarged. 



Lummaton. My Collection. 



Lummaton. 

 Lummaton. 

 Lummaton. 



Wolborough. 



