PLATE XXIV. 



Pigs. 



1. Gyprina claxbiensis, Woods. Claxby Ironstone, Donnington. Sedgwick 

 Museum. Hinge of right valve. (P. 135.) 



Genus — Ltjcina, Bruguiere. 



2, 3. L. sp. Spilsby Sandstone. 2, internal cast of right valve, Donnington. 

 Sedgwick Museum. 3, right valve, Holton, Mr. Lamplugh's 

 Collection. (P. 152.) 



-I, 5. L. sp. Lower Greensand. (P. 152.) 



4. Near Atherfield. Museum of Practical Geology, No. 19719. Internal cast. 



a, right val^e; b, dorsal view. 



5. Sandgate Beds, Parham Park. Museum of the Geological Society, No. 2149. 



Internal cast of left valve. 



6. L. sp. Lower Greensand (Ferruginous Sands), Shanklin. Sedgwick 

 Museum, Cambridge, a, left valve ; b, dorsal view. (P. 1 53.) 



7-0. L. ? sculpta, Phill. Gault, Folkestone. (P. 153.) 



7. Museum of Practical Geology, No. 19761. Eight valve, x 1£. 



8. British Museum, No. L 4990. a, part of right valve ; b, dorsal view of both valves. 



9. British Museum, No. L 4990. Left valve.' 



10-14. L. tenera (Sow.). Gault, Folkestone. (P. 154.) 



10. Sedgwick Museum, a, left valve, X IV; b, portion near middle of valve, x 8. 



11. Sedgwick Museum. Right valve, x 1£. 



12. British Museum, No. L 4977. a, left valve; b, dorsal view; c, portion near 



middle of valve, x 8. 



13. British Museum, No. L 4977. a, left valve, x 11 r, b, anterior view, x If. 



14. British Museum, No. L 4977. Eight valve, x H. 



15. L. Doimesi, Woods. Upper Greensand, Blackdown. Museum of Practical 

 Geology, No. 10771. a, left valve; b, dorsal view; r, portion near 

 middle of valve, X 0. (P. 155.) 



] G— 19. L. pisum, Sow. Upper Greensand, Blackdown. Sedgwick Museum, 

 Cambridge. 16-18, right valves; 18 b, dorsal vieAV ; 10, left valve. 

 All X 3. (P. 156.) 



Genus — Cormcella, Morris and Lycett. 



20-23. G. daxbiensis, Woods. Claxby Ironstone, Benniworth Haven. Sedgwick 

 Museum, Cambridge. (P. 157.) 



20 a, left valve ; b, dorsal view of the same. 



21. Eight valve. 



22. Hinge of right valve, x l£. 



23. Left valve. 



Genus — Shi^eim, Sowerby. 



24. 8. corrugata, Sow. Lower Greensand (Crackers), Atherfield. Sedgwick 

 Museum. Left valve. See also text-figure 26. (P. 157.) 





