94 
o61. 
362. 
363. 
364. 
THE MOLLUSCA OF DORSETSHIRE 
GASTROCHANID. 
GASTROCHANA, Spengler, 1780. 
G. dubia (Penn). G. modiolina (Lamarck). 
Da Costa, p. 234. 
Forbes and Hanley, p. 132, pl. 11, f. 5, 8. 
Pulteney, p. 27,.pl. 1, f. 11. 
Weymouth, Da Costa; dredged alive, McAndrew. 
Sandsfoot Castle, soft rock and mud, alive, Z. 2. Sykes. 
Swanage, J. H#. Cooper. 
Kimmeridge Bay, in blocks of shale, dredged, J. C. M.-P. 
Fossil: Coralline and Red Crags. 
ANATIDIN&A. 
COCHLODESMA, Couthouy. 
C. preetenuis (Mont.) Mya pretenuis, Pulteney. 
Pulteney, p. 29, pl. 4, f. 7. 
Forbes and Hanley, Vol. i., p. 235, pl. 15, f. 4. 
Coast between Weymouth and Portland, Pulteney. 
Poole, north shore near Brownsea, Pulteney. 
Fossil: Coralline Crag. 
THRACIA (Leach) Blainville, 1824. 
T. papyracea, Poli. T. phaseolina, Lam. 
Embedded in rock, near low-water-mark. 
Weymouth, S. Hanley ; EL. R. Sykes. 
Lyme Regis, #. Forbes. 
Fossil: Coralline Crag. 
T. pubescens, Pulteney. T. phaseolina, Lamarck. 
Mya declivis, Tur‘. 
Forbes and Hanley, Vol. i., p. 226, pl. 16, f. 213. 
Pulteney, p. 28, pl. 4, f. 6. 
Weymouth, dredged, Pulteney ; W. Thompson. 
Portland Breakwater, dredged 10 to 12 fathoms, 2. 2. Sykes. 
Fossil : Coralline Crag. 
. T. convexa, Wood. 
Very rare. 
Weymouth, W. Thompson. 
Fossil: Coralline Crag, 
