18 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
British distribution —Generally distributed throughout 
our seas, from low water to all depths, but apparently 
rather scarce. On the Dogger Bank and Northumberland 
coast it seems somewhat common (Alder and others). 
Foreign localities—Norway (Lovén, Jeffreys, and others); 
north and south of Spain and Portugal and Canary Islands 
(M‘Andrew). This is another species to which an almost 
world-wide range has been attributed. 
Famity Lucinip&, D’Orbigny. 
Lucrna, Brugwiere. 
* Lucina spinifera, Montagu. 
Venus spinifera, Montagu ; Myrtea spinifera, Turton ; 
Lucina hiatelloides, Philippi. 
Habitat—In about 12 fathoms, muddy gravel, west side 
of Cumbrae; and in similar bottom, in 10 and 15 fathoms, 
off Otter and Moll Dhu, Loch Fyne; scarce, and not full- 
grown. 
British distribution —The headquarters seem to be in the 
west of Scotland, and it is specially plentiful in Oban Bay. 
Generally distributed over our seas, but becoming (it is said) 
scarce in the south of England. Still further south, at the 
Canaries, this species is reported as common. 
Foreign localities—Norway (Lovén); Spain, Portugal, 
Mogador, Canary Islands, and Madeira (M‘Andrew); Medi- 
terranean and Ajgean (Vares and others). 
* Lucina borealis, Linné. 
Venus borealis, Linné; Tellina radula, Montagu; Venus 
spuria, Gmelin. 
Habitat—I have taken this species in Kames Bay, 
Cumbrae, in 2 or 3 fathoms, on a sandy bottom; and good 
specimens are frequently cast up by the sea on Millport 
sands. I have also taken it occasionally outside Tan Spit, 
Cumbrae; and at Ascog, in Bute; Loch Fyne, off Silver- 
craigs, young specimens only. Mr. Norman says it is not 
uncommon in shallow water, just off the pier at Lamlash. I 
have a specimen of the variety gibba, from Moll Dhu, Loch 
Fyne. 
British distribution.—On all our coasts, rather common. 
Foreign localities—Norway (Loven), Spain (Andrew), 
also Mogador doubtfully; Mediterranean and Sea of Marmora 
(Spratt), North America (Gould, and others), doubtfully. 
