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THE MOLLUSCA OF DORSETSHIRE. 
PISIDIUM, C. Pfeiffer, 1821. 
P. amnicum (Jfiller). 
Forbes and Hanley, Vol. ii., p. 135. 
Slow ponds and streams. 
Lulworth, 7. Rackett. 
Chamberlaynes, Bere Regis, J. C. M.-P. 
Corfe river, King Edward’s Bridge ; Stoborough Meadows, 
J.C. M.-P. 
Wareham, watercourses, meadows, Bevan. 
. pulchella. Weymouth Daniel. 
. P. fontinale (Drap.) 
Slow streams and standing water. 
East Lulworth, Kendall. 
. Henslowiana, Holwell, H. H. Wood. 
. pulchella, Weymouth, Damon; river, Chamberlaynes, Bere 
Regis, J. C. IL.-P. 
. cinerea, river Stour, Spettisbury, J. C. M.-P. 
. P. pusillum, Gel. 
Ponds and ditches. 
West Lulworth, Kendall. 
Wareham, watercourses, Stoborough meadows, and meadows 
on the north side of the town, J. C. M.-P. 
Chesil Bank, ditches adjoining Abbotsbury, and West 
Bexington, J. C. M.-P. 
Sturminster Marshall, watercourses, J. C. 1.-P. 
. P. nitidum, Jenyns. 
Ponds and standing water. 
Swanage pond, R. H. Smith. 
Chamberlaynes, Bere Regis (river), J. C. BL.-P. 
Burton, near Wool, watercourses, river Frome, J. C. M.-P. 
Wilkes Wood ; Langton Matravers, ponds J. C. M.-P. 
Chapman’s Pool, J. C. M.-P. 
P. roseum, Scholtz. 
Marshes, ponds, and stagnant waters. 
Weymouth, Damon. 
