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Stewart — Mollusca of the Boulder Clay. 
Cardium edule, Linn. 
Belfast Waterworks, Bryce. 
Astarte sulcata, Da Costa . 
Belfast Waterworks, Bryce ; Bangor, Castle-Espie, Knock, Waterworks, 
Woodburn, Falls Park, S. A. S. This species and the following variety 
are to be found in almost every Bed of Boulder Clay. Frequently the 
shells are entire, but more commonly fragmentary. In the deposit at the 
Waterworks it is especially abundant. 
Astarte sulcata var . elliptica, Brown. 
Belfast Waterworks, Bryce ; Ballyrudder Jeffreys and Hyndman; Knock, 
&c., S. A. S. 
Astarte compressa, Montagu. 
Belfast Waterworks, Bryce ; Bangor, Falls Park, Woodburn, S. A. S. 
Astarte compressa var. globosa, Moller. 
Ballyrudder, Jeffreys and Hyndman. 
Astarte triangularis, Montagu. 
I found one specimen only in the Boulder Clay at the Falls Park. 
Astarte borealis, Chemnitz. 
Belfast Waterworks, G. C. Hyndman. 
Venus gallina, Linn. 
Belfast Waterworks, Bryce ; Bovevagh, County Derry, S. A. S. 
Venus ovata, Pennant. 
Belfast Waterworks, Bryce. 
Tapes aureus, Gmelin. 
Belfast Waterworks, Bryce. 
Tapes decussatus, Linn. 
Belfast Waterworks, Bryce. 
