23 THE MOLLUSCA OF DORSETSHIRE. 
76. L. palustris, Z. Helix palustris, Gel. 
Pulteney, p. 55, pl. 18, f. 18. 
Purbeck Papers, Vol. ii., f. 46., 
Marshes, ponds, ditches. 
Holwell, H. Wood. 
Weymouth, Damon. 
East Lulworth, Kendall. 
Chamberlaynes, Bere Regis. ' 
Langton Matravers, Wilkes Wood; Wareham, Swanage, 
J. H. Austen. Stoborough Meadows, J. C. M.-P. 
Var. tincta. Dorsetshire, G. Jeffreys. 
77. L. truneatula (Jmill.) Helix fossaria, Mont. 
Pulteney, Racketts ed., p. 56, pl. 18, f£. 17. 
Banks of slow and muddy rivers, marshes, and wet places. 
It is nearly amphibious. 
Weymouth, Damon; Abbotsbury, ditches near Chesil Beach, 
J. C. M.-P. 
Chamberlaynes, Bere Regis, J. C. M.-P. 
Bryanston Park, Whatcombe, river-course, J. C. M.-P. 
Encombe, Chapman’s Pool, Wareham, Stoborough Meadows, 
ditches, J. C. M.-P. 
Blashenwell, water-course, J. H. Austen. 
East Lulworth, Bindon Meadows, Kendall. 
Var. minor, Jeffreys. Langton Matravers, Wilkes Wood, J. C. M.-P. 
Portland, Quaternary bed, cliff near the Bill, Prestwich. 
Limnea truncatula is supposed to be made use of as the 
nurse of the liver-fluke Fascioia hepatica, an entozoa. 
belonging to a group of the animal kingdom, whose mode of 
propagation is by what is termed the alternation of yenera- 
tions, in which each individual is unlike its immediate 
parent and offspring. 
78. L. glabra, Mill. Helix octanfracta, Mont. 
Pulteney, p. 55, pl. 18, f. 11. 
Ditches and ponds; not common. 
Purbeck Papers, Vol. ii, p. 46. 
Lytchett, 7. Rackett. 
Weymouth, Damon. 
East Lulworth ; Morden, ‘streamlet, Kendall. 
Spettisbury, river Stour, J. C. M.-P. 
Stoborough meadows, Wareham, J. H. Austen. 
