192. 
193. 
194, 
196. 
197. 
THE MOLLUSCA OF DORSETSHIRE. 5l 
N. Alderi (orbes.) 
Lives on all kinds of ground ranging from the shore to as many 
as eighty or ninety fathoms. It is smaller than JN. catena. 
Weymouth, £. R. Sykes. 
Swanage Bay, dredged, J. C. M.-P. 
N. Montacuti (Mont.) Natica Montagui, Fortes. 
It ranges from Cornwall to Zetland, but is only a common 
shell in the north, In the Later Tertiary and Quaternary 
beds it is very common. 
Kimmeridge Bay, dredged, J. C, M.-P. 
Fossil : Raised beach, Portland, Prestwich. 
D. PTENOGLOSSA. 
SCALIDA. 
SCALA, Humphrey, 1797. 
S. communis (Lamarck) 
Pulteney, p. 50, pl. 15, f. 11. 
Poole Harbour, Pulteney. 
Weymouth sands, Pulteney, dredged, 17 inch in length, 
E. RB. Sykes ; two living specimens, W. Thompson, 
Kimmeridge Bay (rare) dredged, J. C. 40.-P. 
. S. Turtonis (Zurt.) 
Rare in Dorset, chiefly met with in the south-west of England, 
Weymouth, Damon. 
S. clathratula (Mort. ) 
A southern species and rare. 
Weymouth, Damon. 
Fossil : Coralline Crag. 
ACLIS, Zovén, 1846. 
Inhabits the Littoral zone. 
A. asearis (Turton). 
A very rare and small shell, not exceeding the seventh of an 
inch in length. 
Weymouth, Damon. 
Fossil ; Coralline Crag. 
