486 



MR. G. S. BRADY'S MONOGRAPH OF 



Fig. 12. Carapace, seen from front (Lamlash), x 40. 

 13. Outline of left valve (Channel Islands), 

 x40. 



14-17. Outline of left valve (Roundstone), 

 X 40. 



Bairdia acanthigera. 



18. Carapace, seen from left side, x 40. 



19. do. do. above, x 40. 



20. do. do. below, x 40. 



21. do. do. front, x 40. 



Eucythere declivis. 



22. Carapace (female), seen from left side, x 40. 



23. do. do. above, x 40. 



24. do. do. below, x 40. 



25. do. do. front, x 40. 



26. Separated valves, from above, x 40. 

 52, 53. Variety (?) (Devonshire), x 40. 

 54, 55. Carapace of male, x 40. 



Xestoleberis depressa. 



27. Carapace (of female), seen from left side, 



x40. 



28. Carapace (of female), seenfrom above, x 40. 



29. do. do. below, X 40. 



30. do. do. front, x 40. 



31. Separated valves, shovring hinge-margins, 



x40. 



Plate 



Cytheridea papillosa. 



Fig. 1. Carapace (female), seen from leftside, X 40. 



2. do. do. above, x 40. 



3. do. do. below, x 40. 



4. do. do. front, x 40. 



5. Hinge-margins : (a) left, [b] right, x 40. 



6. Lucid spots, x 84. 



Cytheridea torosa. 



7. Carapace (female), seen from left side, x 40. 



8. do. do. above, x 40. 



9. do. do. below, x 40. 



10. do. do. front, x 40. 



11. Lucid spots, X 84. 



12. Hinge-margins : (a) left, {b) right, x 84. 



Cytheridea elongata. 



13. Carapace, seen from left side, x 40. 



Fig. 32. Carapace of male, seen from left side, x 40. 



33. do. do. below, x 40. 



Xestoleberis aurantia. 



34. Carapace of female, seen from left side, 



x40. 



35. Carapace of male, seen from left side, x 40. 



36. do. do. above, x 40. 



37. do. do. front, x 40. 



Loxoconcha elliptica. 



38. Carapace (female) , seen from left side, x 40. 



39. do. do. above, x 40. 



45. Carapace of male, seen from left side, x 40. 



46. do. do. above, x 40. 



47. do. do. below, x 40. 



48. do. do. front, x 40. 



Loxoconcha guttata. 



40. Carapace (female), seenfrom left side, x 40. 



41. do. do. above, x 40. 



42. do. do. below, x 40. 



43. do. do. front, x 40. 



44. Separated valves, showing hinge-margins, 



x40. 



Eucythere Argus. 



50. Carapace (female), seen from leftside, X 40. 



51. do. do. above, x 40. 

 1 49. Carapace (male ?), from left side^ x 40. 



XXVIII. 



Fig. 14. Carapace, seen from above, x 40. 



15. do. do. below, x 40. 



16. do. do. front, x 40. 



Cytheridea punctillata. 



17. Carapace (female),seenfrom left side, x 40. 



18. do. do. above, x 40. 



19. do. do. below, x 40. 



20. do. do. front, x 40. 



Bairdia fulvd. 



21. Left valve, x 40. 



Cy there pellucida. 



22. Carapace, seen from left side, x 40. 



23. do. do. above, x40. 



24. do. do. below, x 40. 



25. do. do. front, x 40. 



