PLATE V. 



Fig. 



1. Bairdia contracta, p. 53. 



a. Eight valve, inside 



b. Perfect, dorsal aspect 



c. Perfect, right valve upwards 



2, 3. Cytherideis Bartonensis, p. 50. 



2 a. Right valve, outside 



2 b. Right valve, dorsal aspect . 



3 a. Right valve, outside 



3 b. Perfect, dorsal aspect 



4, 5. Cytheridea Mulleri, var. intermedia, p. 42. 



a. Perfect, right valve upwards 



b. Perfect, dorsal aspect 



c. Perfect, posterior aspect 



5. Right valve, outside : young (crushed) 



6, 7, 10. Cy there striatopunctata, p. 27. 



6. Right valve, outside : young 

 7 a. Perfect, left valve upwards . 

 7 b. Perfect, dorsal view 

 7 c. Perfect, anterior view 



10. Right valve, outside 



8. Cythere plicata, var. Laticosta, p. 33. 



a. Left valve, outside 



b. Right valve, inside 



c. Perfect, dorsal aspect 



d. Perfect, anterior aspect 



x 25 





x 25 \ Barton Clifl. 



x 25 J 



x 25 "> 



x 25 



Barton Cliff. 

 X 25 



X 25 J 



x 25 \ 



X 2 ° > Barton Cliff, 

 x 25 



x 25 J 



x 25 





x 25 

 x 25 



s Barton Cliff. 



x 25 





x 25 Alum Bay (Bed No. 29) 



X 25 *! 



x 25 



„ „, Barton Cliff. 

 x 2o 



x 25 j 





9, 17. Cythereis horrescens, p. 38. 



9. Left valve, outside . . . X 25 



[The ornament on the surface should have been figured as blunt 



spines, not tubercles.] 



1 7 a. Left valve, outside : broken . . x 25 



17 b. Left valve, dorsal aspect . • . x 25 



Barton Cliff. 



Bracklesham Bav. 



1 1. Cythere attenuate!, p. 28. 



Left valve, outside: broken at the antero-dorsal hinge . x 25 Alum Bay (Bed No. 29). 



[The subcentral impression towards the dorsal border is not shown in 

 this figure.] 



12, 13. CytherelluMunsteri, p. 56. 

 12 a. Left valve, outside 

 12 6. Left valve, dorsal aspect 



[The posterior extremity is too acute in this figure] 

 13. Left valve, outside 



X 25 

 X 25 



. X 25 J 



Bracklesham Bav. 



