SYSTEMATIC INDEX OF PLATES, 



Plate XLVI.N 



°2I. 



Sheath Razor. 





23- 



Pellucid R. 





24. 



Sub-oval R. 





25. 



Kidney R. 



XLVII. 



26. 



Fragile Telline. 





27. 



DeprefTed T. 





3-i- 



Carnation T. 



XLVIII. 



28. 



Flat T. 





29. 



Plain T. 



XLIX. 



3°- 



Rayed T. 





3 2 - 



Flefh-coloured T. 





36. 



Horny T. 



L. 



37- 



Aculeated Cockle, 





39. 



Fringed C. 





41. 



Edible C. 



LI. 



40. 



Smooth C. 





43- 



A. Strong MactraJ 



LII. 



42. 



Simpleton's M. 





43- 



Strong M. 





44. 



Large M. 





45- 



Yellow Don ax. 





46. 



Purple. 



LIII. 



47- 



Commercial Venus. 



LIV. 



48. 



Sicilian V. 





49. 



A. Antiquated V. 



LV 



• 5* 



, Waved V. 





5h 



A. Indented V. 



LVI. 



50. 



Wrinkled V. 





49. 



Antiquated V. 





5 6. 



Oval V. 



Plate 



