TIIE MOLLUSCA OF DURSETSHIRE. 67 
255, A. patelliformis, Z. Anomia undulata, Gel. 
Pulteney, p. 39, pl. 11, £. 4. 
It extends from the Littoral zone to 40 and 50 fathoms. 
Weymouth, Damon. 
Fossil: Coralline and Red Crags. 
PECTINIDA. 
PECTEN, Mull, 1776. 
56. P. pusio (L.) Ostrea sinuosa, Z. 
Pulteney, p. 38, pl. 10, £. 3-6. 
Generally distributed round the coast, ranging from low- 
water-mark to several fathoms. 
Weymouth Bay, Damon, £. R. Sykes. 
Poole, breakwater (living) ; sandbanks, outside Harbour 
(dead), Dr. Turner. 
Kimmeridge Bay, dredged, abundant, J. C. A-P. 
Fossil : Coralline Crag. 
57. P. opercularis (Z.) Ostrea opercularis, L. 
Pulteney, p. 38, pl. 9, f. 1, 2, 4, 5. 
Generally distributed round the coast ; local name, Squin. 
E. —R. Syles. 
Var. Audouinii, Payr.; Weymouth Bay, Z. R. Sykes. 
Fossil : Coralline and Red Crags. 
58. P. varius (Z.) Ostrea varia, L. 
Pulteney, p. 38, p. 10, f. 1, 2, 4, 5, 7, 9. 
This beautiful and varialle-coloured shell is distributed 
generally round the coast, dredged at various depths, anl 
invariably attached to some object by its byssus. 
Poole, breakwater (living), outside Harbour (dead), on 
the sandbanks, Dr. Turner. 
Weymouth, #. RB. Sykes. 
Kimmeridge Bay, dredged, J. C. ML-P. 
Shore between South Haven and Studland, J. C. I-P. 
Fossil ; Lenham beds. 
. lineatus, Da Costa; extremely common in Weymouth Pay, 
