104 LAND AND FRESH-WATER SHELLS. 



P. fontinale Drap. Forty-two counties. 



Eng. S. o-i 6-7 913 17 21 28 30 3234 37-38 

 40. Wales 41 44-45 47. Eng. N. 53 5667 69. Scot. 



3 o 101 108. Irel. 124. 

 P. pusillum Gmel. Fifty-two counties. 



Eng. S. o-i 4 6-7 9 1117 2I 2 3 26 28 30 32-33 

 36-37 39-40- Wales 41-42 45 47. Eng. N. 5359 61 

 64 66-67 69-70. Scot. 73 78 81 90 101 105 107-108. 

 Irel. 144. 

 P. nitidum Jen. Twenty-four counties. 



Eng. S. 6 10- 1 1 16 23 28 37-38. Wales 41-42. Eng. 

 N. 54 56 59 61 63 65 67. Scot. 85 94 112. Irel. 



113- 

 P. roseum Scholtz. Thirteen counties. 



Eng. S. o ii J5 17 20-21 30 40. Eng. N. 56-57 63 

 66. Scot. 85. No 'records for Wales or Ireland. 

 Unio tumid us Phil. Twenty-one counties. 



Eng. S. 6 2123 3 3 2 34 37~ 39- Wales 47. 

 Eng. N. 53 57 59 61 64. No records for Scotland or 

 Ireland. 

 U. pictorum L. Twenty-four counties. 



Eng. S. 6 8 17 21-22 27 29-30 32 37 39. Wales 

 47. Eng. N. 53 59 62 64 68. No records for Scot- 

 land or Ireland. 

 U. margaritifer L. Sixteen counties. 



Wales 45 49-50. Eng. N. 62 67 71. Scot. 76-77 

 87-88 90 98 108. Irel. 126 144-145. No records for 

 England S. 

 Anodonta cygnea L. Forty-one counties. 



Eng. S. 8 ii 17-18 20 25 27-28 30 32 34 

 37 40. Wales 42 45. Eng. N. 5367. Scot. 76 90. 

 Irel. 115. 

 A. anatina L. Twenty-five counties. 



Eng. S. 6 15-16 20 22 27 32-34 38 40. Wales 

 45. Eng. N. 55 59 61 65 67. Scot. 83. No records 

 for Ireland. 

 Dreissena polymorpha Pall. Twenty-three counties. 



Eng. S. 6 17 2123 2 9 3 1 34 37 4- Eng. N. 



