366. 
367. 
Var. 
368. 
THE MOLLUSCA OF DORSETSHIRE. 95 
T. distorta (Montagu). 
Forbes and Hanley, Vol. i, p. 231, pl. 17, f. 1, 2, 3, 8. 
Aithough not a borer this mollusc buries itself in the crevices 
rocks, and conforms itself to the cavity in which it is 
ing. 
Weymouth, dead valves on the shores, alive opposite the 
Old Castle, S. Hanley; £. R. Sykes. 
Kimmeridge Bay, dredged, embedded in blocks of shale and 
cement-stone ; not uncommon, J. C. M.-P. 
Fossil : Coralline Crag. 
PANDORIDA. 
PANDORA (Solander) Bruguitre, 1792. 
P. ineequivalvis (Z). P. rostrata, Lamarck. 
Forbes and Hanley, Vol. i., p. 207, pl. 8, f. 1-4. 
Weymouth, Damon ; abundant, #. R. Sykes. 
Shore between Studland and South Haven, abundant after a 
storm (living), J. C. ML-P. 
obtusa, Jef. Forbes and Hanley, Vol. i., p. 210, pl. 8, f. 5. 
Portland, frequently obtained dredging, S. Hanley. 
Weymouth, #. Forbes. 
White Nose, dredged, W. Thompson. 
Kimmeridge and Worbarrow Bays, dredged, J. C. M.-P. 
Occurs as far as Barton in Hants, £. 2. Sykes. 
Fossil : Typical form occurs in the Coralline Crag. Var. obtusa 
in the Red Crag. 
LYONSIIDA. 
LYONSIA, 1822. 
L. norvegica (Chemnitz). 
Forbes and Hanley, Vol. i., p. 214, pl. 8, f. 6-9. 
Weymouth. “The finest specimens we know of are those 
dredged off Weymouth (near Portland), which measure 
fully one inch and three-quarters in length and seven- 
eighths of an inch in breadth,” 2. Forbes and Hanley. 
Portland, West Bay, dredged 15 fathoms, McAndrew. 
White Nose, W. Thompson. : 
Kimmeridge Bay, off Gadcliff, J. C. M.-P. 
