336 CENSUS OF DISTRIBUTION OF BRITISH MOLLUSCA. 



L. palustris (MiilL). Forty-four counties. 



Eng. S. o 6 II— 17 19—23 27 29 32—34 37—39- 

 Wales 41 42 45. Eng. N. 54 56 — 58 60 — 67 69 70. 

 Scotl. 73 88 89. Irel. 145 148. 



Wisconsin ; Detroit River ; Springwells, Houghton 

 Lake, and Ann Arbor, Mich. ; Rhode Island ; Ratzeburg 

 Lake, Germany ; Holland ; Begles, near Bordeaux ; 

 Bordeaux ; Buda-Pesth ; Obedeska Bara, Slavonia ; Car- 

 berry, &c., Manitoba; Madonie, Sicily. 

 L. truncatula (MiilL). Forty-five counties. 



Eng. S. 6 9 II 13 15—17 19 21—23 32—34 37-39- 

 Wales 41 4445 49 50. Eng. N. 55—59 61—67 7° 7i- 

 Scotl. 75 85 89 90 100 107 — 109. Irel. 139. 



Funchal, Madeira ; Harz ; Bordeaux; Palermo; Algiers. 

 L. glabra (Miill.). Sixteen counties. 



Eng. 8. o 16 19 37 39 40. Eng. N. 59 61 — 67 69 

 70. No records for Wales, Scotland, or Ireland. 



Neumark, Prussia ; Begles, near Bordeaux ; Bordeaux, 

 Ancylus fluviatilis Miill. Thirty-seven counties. 



Eng. S. I 6 9 II 13 15 17 19 20 23 32 34 35 37—40. 

 Wales 41 44 47 52. Eng. N. 56 — 58 61 — 65 67 69 — 71. 

 Scotl. 73 75 89 108. No records for Ireland. 



Neumark, Prussia ; Bordeaux ; Alcantara R., Sicily. 

 A. lacustris (L). Twenty-one counties. 



Eng. S. 6 II 16 22 23 32 — -34 37 — 39. Wales 41. 

 Eng. N. 56 58 61 63 — 67. Scotl. 73. No records for 

 Ireland. 



It will be seen on perusal of the above census that the 

 principal places to be regarded as among the uninvestigated 

 and ' dark corners ' of the kingdom are Scotland and Ireland, 

 Mid-Wales, and the eastern and south-western counties of 

 England. Specimens from any of which districts will be of 

 unusual value and importance. 



J.C, iv., July, 1885. 



