490 



MR. G. S. BRADY'S MONOGRAPH OF 



Cythere (?) acerosa. 

 Fig. 50. Left valve, front (adult female). 



51-54. Perfect carapace (adult male), lateral, 

 dorsal, ventral, and end views, x 40. 



Plate 



Cytherura acuticostata. 



Fig. 1. Carapace (male), seen from left side, x 40. 



2. do. do. above, x 40. 



3. do. do. below, x 40. 



4. do. do. front, x 40. 



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



6. do. do. above, x 40. 



7. do. do. below, x 40. 



8. do. do. front, x 40. 



9. Carapace (female, smooth variety), from 



left side, x 40. 



10. Carapace (female, smooth variety), from 



above, x 40. 



11. Carapace (female, smooth variety), from 



below, X 40. 



Cytherura cornuta. 



12. Carapace (female?), from left side, x 40. 



13. do. do. above, x 40. 



14. do. do. below, x 40. 



15. do. do. front, x 40. 



Cytherura Robertsoni. 



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



17. do. do. below, X 40. 



18. do. do. front, x 40. 



Cytherura affinis. 



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



20. do. do. below, x 40. 



21. do. do. front, x 40. 



Cytherura angulata. 



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



23. do. do. above, x 40. 



24. do. do. below, x 40. 



25. do. do. front, x 40. 



Cytherura striata. 



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



27. do. do. above, x 40. 



28. do. do. below, x 40. 



Fig. 55. Carapace, seen from left side, x 40. 



56. do. do. above, x 40. 



57. do. do. below, x 40. 



58. do. do. front, x 40. 



XXXII. 



Fig. 29. Carapace (female) , from front, x 40. 



62. Sculpture of shell, x 210. 



64. Carapace (female), from left side, x 84. 



65 . Interior of left valve, x 84. 



Cytherura lineata. 



30. Carapace of female, from left side, x 40. 



31. do. do. below, x 40. 



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



33. do. do. above, x 40. 



34. do. do. front, x 40. 

 67. do. do. left side, x 84. 



Cytherura cuneata. 



35. Carapace (female), seen from left side, 

 x40. 



36. Carapace (female), seen from above, x 40. 



37. do. do. below, X 40. 



38. do. do. front, x 40. 



63. Sculpture of shell, x 210. 



Cytherura Sarsii. 

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



40. 



do. 



do. 



above, x 40. 



41. 



do. 



do. 



below, X 40. 



42. 



do. 



do. 



front, x40. 



Cytherura undata. 



43. Carapace (male), from left side, x 40. 



44. do. do. above, x 40. 



45. do. do. below, x 40. 



46. do. do. front, x 40. 



47. Carapace (female), left side, x40. 



48. do. do. above, x 40. 



49. do. do. below, x 40. 

 66. do. do. left side, X 84. 



Cytherura nigrescens. 



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



51. 



do. 



do. 



above, x 40. 



52. 



do. 



do. 



below, x 40. 



53. 



do. 



do. 



front, x40. 



