52 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
British distribution—Chiefly in the west and north of 
Scotland, and occasionally on the east coast, the most 
southern locality that I am aware of being the Dogger 
Bank (Leckenby and Marshall). It is by no means 
scarce throughout western Scotland from the Clyde 
northward. 
Foreign localities. — Entirely northern, extending in 
Europe from Sweden (J/alm) throughout Norway (Lovén, 
&e.), Spitzbergen (Haton), and Iceland (Verkriizen) ; and 
in eastern America from Greenland (Yorell) and Labrador 
(Whiteaves) to Massachusetts (Gould). Carpenter gives 
also the Sea of Okhotsk. 
EMARGINULA, Lamarck. 
Emarginula fissura, Lininé. 
Patella fissura, Linné; Emarginula reticulata, J. Sowerby; 
Emarginula Miilleri, Yorbes. 
Habitat—Common throughout the whole district on 
stony and shelly ground from low tide downward—it is 
especially plentiful off Bogany and Toward Points. In 
Campbeltown Loch it is not uncommon on the beach, a 
little above low water mark, but the specimens in such 
situations are seldom large. 
British distribution —Throughout all our seas, and at all 
depths; rather a common shell. 
Foreign localities—From Norway (Lovén, and others) 
throughout Western Europe to Spain, Madeira, and 
Canaries (M‘Andrew), as well as in the Mediterranean 
and Adriatic. 
Emarginula crassa, J. Sowerby. 
Habitat-—This very scarce species seems to frequent 
rocky and bouldery ground. I have taken one live and fine 
specimen at Lochgoilhead, west side, half a mile below 
Douglas pier, in about 12 or 14 fathoms—the ground being 
very rough and bouldery, making it almost impossible to 
work the dredge. Besides this I have only taken one 
specimen, dead and worn, in deep water in Rothesay 
Bay. Mr. Barlee is said to have taken it in Loch 
Long. ! 
British distribution.—Dublin and Antrim coasts ; Oban ; 
Skye ; exceedingly scarce. 
Foreign localities—Norway and Sweden are the only 
non-British habitats which I have noticed. 
