CENSUS OF DISTRIBUTION OF BRITISH MOLLUSCA. 335 



Eng. N. 56 58 61 — 67. Scotl. 81. No records for Ireland. 

 Holland ; Frankfurt ; Michigan ; Illinois ; Utah ; 

 Carberry, Brandon, Fort Ellice, Birtle, &c., Manitoba. 



P. fontinalis (L.). Thirty-one counties. 



Eng. S. 6 II 15 17 20 — 23 32 33 37 — 39. Wales 41 

 42. Eng. N. 53 — 59 61 — 64 66 67 71. Scotl. 73 89. 

 No records for Ireland. 



Neumark, Prussia ; Holland. 

 Limnsea glutinosa (Miill.). Six counties. 



Eng. S. 15 22 27. Eng. N. 62. Irel. 115 131. 

 No records for Wales or Scotland. 

 South Sweden. 

 L. involuta Thomps. One county. 



Confined to county Kerry (No. 148). 

 L. peregra (MlilL). Sixty-eight counties. 



Eng. S. o I 5 6 10 — 17 19 — 24 29 30 32 — 34 

 37—40. Wales 41 42 44 45 49 50 52. Eng. N. 53— 7«- 

 Scotl. 72 73 75 81 85 88 — 90 98 100 103 107 112. 

 Irel. 114 148. 



Bordeaux ; St. Malo ; Marseilles ; Jura ; Holland ; 

 Carinthia ; Rovereto; Iceland; Obedeska Bara, Slavonia ; 

 Gibraltar ; China ; Oreto R. and Madonie, Sicily. 



L. auricularia (L.). Twenty-nine counties. 



Eng. S. 6 IT 13 15 16 21—24 27 30 32—34 37—39- 

 Wales 44. Eng. N. 53 56 57 59 61—64 66 67. 

 Scotl. 83. No records for Ireland. 



Holland ; Frankfurt ; Neumark, Prussia. 



L. stagnalis (L.). Thirty-three counties. 



Eng. S. 5 6 II 13 15 16 20—24 29 30 32—34 

 37 — 40. Eng. N. 54 — 59 61 — 67. No records for Wales, 

 Scotland, or Ireland. 



Holland; Lake Michigan; Wisconsin; Lake Superior; 

 Bordeaux ; Birtle, Rapid City, Carberry, Cook's Lake and 

 near Shoal Lake, Manitoba ; Obedeska Bara, Slavonia. 



