PLATE II. 



All the figures are magnified 25 diameters, except 7 c, 11 b, and 18 h, x 75 



diameters. 

 Fig. 



1. CythereUa Bcijrichl, Reuss. Var. lasvls, Jones & Sherborn. (Page 48.) 



a, Right valve ; b, edge view. 



2. CythereUa BeyricM. Var. 2. (Page 48.) 



a. Right valve ; b, edge view. 



3. CythereUa Boemeri, Jones & Sherborn. (Page 47.) 



a, Right valve ; i, edge view ; c, end view of a carapace. 



4. CythereUa Beiissii, Jones & Shei'born. Right valve. (Page 47.) 



5. CythereUa Bcyrichi (Reuss). Var. 3. (Page 48.) 



a, Carapace, with left valve outwards j b, edge view of carapace. 



6. CythereUa Beyrichi (Reuss). Var. 4. (Page 48.) 



a. Left valve ; b, edge view. 



7. CythereUa Beyrichi (Reuss). Var. 5. (Page 48.) 



a. Right (larger) valve ; b, edge view ; c, portion magnified. 



8. CythereUa li.eussH, Jones & Sherborn. (Page 47.) 



a, Right valve ; b, edge view. 



9. CythereUa Beyrichi (Reuss). Var. 6. (Page 48.) 



a. Right valve ; b, edge view of carapace. 



10. CythereUa Miiensteri (Roemer). (Page 47.) 



a, Left (small) valve ; b, edge view. 



11. Cythere arenosa, Bosquet. Var. (Page 27.) 



a, Right valve; b, poi'tion magnified. 



12. Cythere transenna, Jones & Sherborn. Right valve. (Page 31.) 



13. Cythereis Prestwichiana, Jones & Sherborn. Left valve. (Page 33.) 



14. Cythereis Prestwichiana, Jones & Sherborn. (Page 33.) 



a. Right valve ; b, sectional view across the middle. 



15. Cythereis aranea, Jones & Sherborn. (Page 33.) 



a, Left valve ; b, ventral aspect of the carapace. 

 IG. Cythere scabropapidosa, Jones. Right valve. (Page 28.) 



17. Cythere scabropapulosa, Jones. Var. acrdeaia, J. & S. Right valve. (Page 28.) 



18. Bairdia Londinensis, Jones & Sherborn. (Page 17.) 



a. Right valve ; b, portion magnified. 



19. G ytheropt ero)i triangidare (Reuss). (Page 44.) 



a, Right valve ; b, dorsal aspect of right valve ; c, end view of carapace. 



20. Krithe Londinensis, Jones & Sherborn. (Page 41.) 



a, Left valve ; b, ventral aspect of carapace. 



