PLATE VI {continued). 



Fig. 



13. Cytheridea debilis, p. 43. 



Left valve, outside 



14. Cy there Kostelensis ? p. 28. 



14 a. Left valve, outside 

 14 6. Perfect, dorsal aspect 



15. Cytherideis? sp., p. 49. 



Cast of left valve 



16. Cythere Wetherellii, p. 26. 



a. Left valve, outside 



b. Right valve, hinge-line 



c. Right valve, dorsal aspect 



d. Right valve, posterior aspect 



17. Cythere plicata, p. 32. 



Left valve, outside 



IS. Cythere angulatopora, p. 34. 

 Left valve, outside : broken 



■i 



V}. Cythereis, sp., p. 40. 



Fragment of left valve 



X 25 Col well Bay. 



} 



. x 25 

 . x 25 



Woolwich. 



X 



25 



X 



25 



X 



25 



X 



25 



x 12 New Cross. 



Colwell Bav. 



. x 25 Colwell Bay. 



. x 25 Colwell Bay. 



x 25 Pegwell Bay. 



