PLATE VIII. 
GRaMMATODON (continued). 
FIGS. 
1,2. G. secwris (Leym.), Speeton Clay (zone of Bel. brunsvicensis), Speeton. 
(P. 44.) 
1. Collection of G. W. Lamplugh. Dorsal view x 2. 
2. York Museum. Left valve, with part of shell preserved. 
3—8. G. carinatus (Sow.). (P. 45.) 
3. Greensand, Blackdown. Wiltshire Collection, Woodwardian Museum. a, outline 
of left valve; b, same x 14; ce, dorsal view of same X 13; d, hinge and area 
of same X 2. 
. Same locality and Collection. a, left valve; b, dorsal; c, anterior view. 
. Same locality and Collection. Right valve. 
- Gault, Lyme Regis. Woodwardian Museum. Left valve. 
. Gault (zone ii), Folkestone. Museum of Practical Geology, No. 1632. a, right 
valve; 4, dorsal. 
8. Gault, Folkestone. Wiltshire Collection, Woodwardian Museum. Left valve. 
The ventral part is crushed in, so that the shell appears too long pro- 
portionately. 
IQA 
Genus Triconoarca, Conrad. 
9,10. TT. Passyana (d’Orb.). (P. 47.) 
9. Greensand, Kingskerswell. British Museum, No. L 1853. a, right valve; 4, 
cast of hinge; c, ornamentation x 3. 
10. Chloritic Marl, Maiden Bradley. Woodwardian Museum. Internal cast. a, right 
valve ; b, dorsal. 
yenus CucuLttma, Lamarck. 
11—13. C. Cornueliana (d’Orb.). Lower Greensand, Atherfield. (P. 50.) 
11. Right valve. Woodwardian Museum. Above the Crackers, 
12. Right valve. Woodwardian Museum. Crackers. 
13. Left valve. Woodwardian Museum. Above the Crackers. 
