PATE int: 
Nucuta (continued). 
FIGS. 
1—12. N. (Acila) hivirgata, Sow. Gault, Folkestone (except f. 12). (P. 19.) 
1. Woodwardian Museum. Right valve x 13. 
2. British Museum, No. L 5907. a, outline of left valve; b, same x 14; ¢, dorsal 
outline. Figured by Gardner. 
3. Wiltshire Collection, Woodwardian Museum. Right valve x 13. 
4. British Museum, No. L 5907. Left valve x 13. Figured by Gardner. 
5. — No. L 4972. a, right valve; 6, posterior end; ¢, dorsal x 13. 
6. = a Left valve x 13. 
ile — — Median portion of left valve x 14. 
8. — — Median portion of right valve x 1}. 
9. — — Left valve x 14. 
10. — No. L 5102. Hinge of right valve x 2. 
11. Collection of C. J. A. Meyer. Antero-ventral portion of left valve x 6. 
12. Cambridge Greensand. Woodwardian Museum. Internal mould, right valve. 
13. N. pectinata, Sow. Cambridge Greensand (derived). _Woodwardian 
Museum. Internal mould. a, right valve; 6, dorsal view. 
(P. 16.) 
14,15. N. pectinata, var. crete, Gardner. Greensand, Blackdown. Museum of 
Practical Geology. The Types of var. cretz. (P. 18.) 
14. a, right valve; 6, dorsal (No. 6449). 
15. Left valve (No. 6450). 
16—21. N. ovata, Mant. Gault, Folkestone. (P. 21.) 
16. British Museum, No. L 4968. Right valve. 
17. Wiltshire Collection, Woodwardian Museum. Right valve. 
18—20. British Museum, No. L 4968. 18, right valve. 19. a, left valve; 6, dorsal 
view ; 20, right valve. 
21. Woodwardian Museum. a, right valve; 6, dorsal. 
