8 
3 THE MOLLUSCA OF DORSETSHIRE. 
316. L. elliptica, Zamarck. Mactra lutraria, L. 
317. 
318. 
319. 
3 
0. 
Pulteney, p. 33, pl. 5, f. 11. 
Lives in moist mud and ooze on the Dorset coast. 
Weymouth, Damon, occasionally after storms. 
Poole, cn the sand-banks (dead), Dr. Turner. 
Fossil : Coralline and Red Crags. 
Order CARDIACEA. 
CARDIIDA. 
Siphons short; foot large, sickle-shaped. 
CARDIUM, Z. 1758. 
C. aculeatum, L. 
British Conchology, Vol. ii., p. 268. 
A local shell, rare on the Dorset coast but very abundant: in 
South Devon, 
Weymouth Bay, dredged, W. Thompson ; several, one measur- 
ing in greatest breadth four and a-half inches, Z. 2. Sykes. 
C. echinatum, J. 
Pulteney, p. 31, pl. 6, f. 2. 
Weymouth, Bay, #. R. Sykes. 
Shore between Studland and South Haven, J. C. M.-P. 
Fossil: St. Erth beds and Red Crag. 
C. tuberculatum, Z. C. rusticum (Z.) 
Pulteney, p. 31, pl. 2, f. 2. 
British Conchology, Vol. ii., p. 273. 
Sandy bays, from low-water-mark at spring-tides to 12 fathoms. 
Weymouth, Damon, HE. R. Sykes. 
Poole, sand-banks (dead), Dr. Z'urner. 
Shore between Studland and South Haven, J. C. M.-P. 
Fossil : St. Erth beds and Red Crag. 
C. exiguum, Gmel. C. pygmzum, Don. 
Forbes and Hanley, Vol. ii., p. 29, pl. 32, f. 8, 
Weymouth, Hanley. 
Weymouth Bay, on sea-weed, dredged 5 fathoms, Z. R. Sykes, 
