THE MOLLUSCA OF DORSETSHIRE. 19 
Class DITREMATA. 
Order GEHYDROPHILA. 
AURICULIDA. 
CARYCHIUM, Miller, 1774. 
67. C. minimum, Jill. 
Pulteney, p. 52, pl. 19, f. 13. 
Under stones, logs of wood, roots of grass, among moss and 
dead leaves. 
Generally distributed. 
East Lulworth, Kendall. 
Weymouth, Damon. 
Bryanston, among moss ; Whatcombe Park, J. C. 1.-P. 
Fossil: Blashenwell Quaternary tufaceous deposit, Clement 
Reid. 
ALEXIA (Leach), Gray, 1847. 
68. A. denticulata (Mont.) Conovulus denticulatus, Mont. 
Purbeck Papers, Vol. ii., p. 45. 
On miud-flat sand salt-marshes, under stones, on coast cliffs, 
sometimes far higher than high-water-mark, * 
Weymouth, Lodmoor, salt-marshes, Bryer. 
River Frome, below Wareham, under tidal influence, 
J. H, Austen. 
Portland, associated with the white variety, very large and 
abundant locally, £. R. Sykes. 
Tilly Whim, Swanage; Dancing Ledge, Langton Matravers, 
J.C. M.-P. 
69. A. bidentata (dfont.) Conovulus bidentatus, Mont. 
Crevices of rocks near high-water mark, or where the spray 
of the sea only occasionally reaches. 
Sandsfoot Castle, Weymouth ; Portland ; Fleet ; plentiful under 
stones between tide-mark in company with Truncatella 
truncatula and Rissoa liticrea, E. R. Sykes. 
Kimmeridge Bay in crevices of rocks, at and above high- 
water mark, associated with Laswa rubra and Otina otis. 
Var. alba, Turton. Weymouth, Damon. 
