PLATE XXI. 



Cyprina (continued). 



Figs. 



1. C. anijllca, Woods. Lower Greensand (Crackers), Atherfield. Sedgwick 



Museum, a, right valve; b, dorsal view. (P. 137). 



2. C. claxbieiisis, Woods. Claxby Ironstone, Benniwortli Haven. Sedgwick 



Museum. Left valve. (P. 135.) 



3. C. sp. Tealby Limestone, Claxby. Sedgwick Museum. Left valve, 



X f. (P. 13G.) 



4-7. 0. (Venilicardta) protensa, Woods. Lower Greensand, Atherfield. See 

 also Text-figures 20, 21. (P. 137.) 



4. Perna-bed.. Sedgwick Museum, a, left valve, X I ; h, dorsal view, x '+. 



5. Perna-hed. Museum of Practical Geology, No. 16744. Hiuge of left valve. 



6. Peraa-bed. British Museum, L 432. Hiuge of right valve, X f . 



7. Crackers. British Museum, L 6304. A small specimen. Eight valve. 



8, 9. C. Sowerbyi, d'Orb. See also Text-figure 22. (P. 139.) 



8. Hythe Beds, Hythe. Sedgwick Museum. Iuterual cast of right valve. 



9. Lower Greensand, between Atherfield and Blackgang. York Museum. Left 



valve. 



