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THE MOLLUSCA OF DORSETSHIRE. 
VALVATELLA, Gray, 1857. 
Boreal, under stones, and seaweed near low-water-mark. 
. [V. helicina (0. Fabricius). 
Quarterly Journal Geological Society, Vol. xxxi., 1875, p. 52. 
“Proceedings” Dorset Natural History and Antiquarian Field 
Club, Vol. xvi., p. 173. 
Its most southern limits at the present day are Yorkshire and 
Dublin Bay. 
Raised Beach, Portland, Prestwich. ] 
CALLIOSTOMA, Swainson, 1840. 
C. zizyphinum (Z.) Trochus zizyphinus, L. 
Pulteney, p. 48, pl. 16, f. 3, 4. 
Abundant round the coast. 
Poole, Pulteney ; living and dead, on sand-banks, Dr. Turner. 
Weymouth, Pulteney. 
Lyme Regis, J. W. Cundall. 
Kimmeridge Bay, dredged at various depths. 
Fossil: Coralline and Red Crags. 
. C. granulatum (Born.) Trochus granulatus, Born. 
Trochus papillosus, Pult. 
Pulteney, p. 48, pl. 16, f. 6. 
Forbes and Hanley, Vol. ii., p. 499, pl. 67, f. 7, and pl. 68, f. 2. 
Rare, 
Poole, north shore, Pulteney. 
Weymouth, Pulteney, S. Hanley. 
Portland, West Bay, 15 fathoms, McAndrew and EH. Forbes. 
Lulworth, Jf. @. Stuart. 
Fossil: Red Crag. 
29. C. miliaris (Brocchi). Trochus millegranus, Philippi. 
Forbes and Hanley, Vol. ii., p. 502, pl. 66, £. 9, 10. 
Rare on our coasts. 
Portland, West Bay, dredged 15 to 20 fathoms, McAndrew 
and FE. Forves. 
Kimmeridge Bay, dredged, J. C. M.-P. 
Fossil : Coralline Crag. 
