1S6 



MR. G. S. BRADY'S MONOGRAPH OF 



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



13. Outline of left valve (Channel Islands), 



x 40. 

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



x40. 



Bairdia acanthigera. 

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



33. 



do. 



do. 



left side, x 40 

 below, x40. 



Xestoleberis aurantia. 



34. Carapace of female, seen from left side, 



x40. 



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



19. 



20. 

 1. 



do. 

 do. 

 do. 



do. 

 do. 



do. 



above, x 40. 

 below, x40. 

 front, x 40. 



36. 

 37. 



do. 



do. 



do. 



do. 



above, x40. 

 front, x 40. 



Loxoconcha elliptica. 





Eucythere declivis. 



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



above, x 40. 

 below, x 40. 

 front, x 40. 



26. Separated valves, from above, x 40. 



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



54, 55. Carapace of male, x 40. 



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



above, x 40. 



39. 



do. 



do. 



23. 

 24. 

 25. 



do. 

 do. 



do. 



do. 



do. 

 do. 



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



above, x 40. 



46. 



47. 

 48. 



do. 

 do. 

 do. 



do. 

 do. 

 do. 



below, x4() 

 front, x40. 



Loxoconcha guttata. 



Xestoleberis depressa. 



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



x40. 

 \J8. Carapace (of female), seenfrom above, x 40. 



29. 

 30. 



do. 

 do. 



do. 

 do. 



below, x 40. 

 front, x40. 



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



above, x40. 



41. 

 42. 

 43. 



do. 

 do. 

 do. 



do. 

 do. 

 do. 



below, x40 

 front, x40. 



44. Separated valves, showing hinge-margins, 



x40. 



31. Separated valves, showing hinge-margins, 



x40. 





Eucythere Argus. 



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



above, x40. 

 Jin lftft side, x 40. 



51. 



do. 



do. 



Plate XXVIII. 



Cytheridea papillosa. 





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



above, x40. 

 below, x 40. 

 front, x 40. 



3. 

 4. 



do. 

 do. 

 do. 



do. 

 do. 

 do. 



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



15. 



16. 



do. 



do. 



do. 

 do. 



below, x40 

 front, x40. 



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. 



9. 

 10. 



do. 

 do. 

 do. 



do. 

 do. 

 do. 



above, x 40. 

 below, x40. 

 front, x40. 



Cytheridea punctillata. 



1 7 . Carapace (female) , seen from left side, x 40 



above, x 40. 

 below, x 40. 

 front, x 40. 



18. 

 19. 

 20. 



do. 

 do. 



do. 



do. 

 do. 

 do. 



Bairdia fulva. 



11. Lucid spots, x84. 



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



Cytheridea elongata. 



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



21. Left valve, x 40. 



Cy there pellucida. 



22. 

 23. 

 24. 

 25. 



from left side, x40 



do. 

 do. 

 do. 



do. 

 do. 

 do. 



above, x40. 

 below, x40. 

 front, x40. 



