The Raised Sea-Bottom of Fillyside. 227 
Scrobicularia alba (Wood). Scrobicu- 
laria, 
Mactra alba, Wood, in Linn. Trans., vol. iv., p. 165, t. xvi., figs. 9-12. Schumacher. 
Syndosmya alba, F. and H., vol. i., p. 316, pl. xvii., figs, 12-14. 
Scrobicularia alba, Jeff., loc. cit., vol. ii., p. 488; vol. v., pl. xlv., 
fig. 3. 
Rare. This species has been obtained in the Clyde beds 
at Greenock, West Loch Tarbert, etc. ; in the estuarine clays 
at Belfast and Larne Lough; it also occurs in the Coralline 
Crag. 
Scrobicularia alba is found living in the mud of estuaries 
creeks, and bays on all the British coasts. 
Family Myip& (Myap2). 
Mya arenaria, Linne. 
Mya, 
Linne. 
Mya arenaria, Linn., Syst. Nat., p. 112. 
3 oy F. and H., vol. i., p. 168, pl. x., figs. 4-6. 
4 “2 Jeff. , doc. cit., vol. ili., p. 64; vol. v., pl. 1., fig. 1. 
Not common. This species has been recorded as fossil 
from the Clyde beds at Bute and Loch Gilp; from the 
estuarine clay at Belfast; and from the Red Crag. 
It is found living all round the British coasts. 
Family SAXICAVIDA. 
Saxicava rugosa (Linne). Saxicava, 
Fleurian de 
Mytilus rugosus, Linn., Syst. Nat., p. 1156. Bellevue, 
Saxicava rugosa, F. and H., vol. i., p. 146, pl. vi., figs. 7 and 8. 
a ef Jeff. , loc. ciz., vol. iii., p. 81; vol. v., p. li, fig. 3. 
Frequent. As a Post-Tertiary fossil it has been found in 
the Clyde beds at Greenock, West Loch Tarbert, etc.; in the 
boulder clay at Caithness; at Elie and Errol; in the Belfast 
and Larne Lough estuarine clays; and in the Coralline 
Crag. 
This species is found living all round the British 
coasts. 
