92 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
northern coasts of Scotland. I have not observed any very 
trustworthy notice of its occurrence on the east coast. It is 
found throughout the greater part of Ireland. 
Foreign localities.— Western France, Spain, Portugal, 
Madeira, and Canaries (M‘Andrew), and throughout the 
Mediterranean, Adriatic, and Aigean (Forbes, Naves, and 
others). 
* Defrancia Leufroyi, Michaud. 
Pleurotoma Leufroyi, Michaud; Pleurotoma sinuosa,Fleming; 
Fusus Boothii, Brown; Mangelia Leufroyi, Forbes and 
Hanley. 
Habitat.—I have only taken two live examples—one on 
the rough bank off Shellbole Bay, Cumbrae, in 15 fathoms 
stones and nullipore; and one in 6 fathoms stony ground 
opposite Otter, Loch Fyne.. A few dead shells were also 
obtained in same localities. It has been taken by Professor 
Forbes, Dr. Bryce, and others in Lamlash Bay, Arran ; whilst 
Mr. Norman states that it is frequent in other parts of the 
Clyde. 
British distribution—From the Channel Islands to Shet- 
land ; a scarce and local species. 
Foreign and Sweden (Swi's, 
and others), Spain, Madeira, and Canaries (M‘Andrew), 
Mediterranean and Aigean Seas (forbes, and others). 
* Defrancia linearis, Montagu. 
Murex linearis, Montagu ; Murex elegans, Donovan ; Pleuro- 
toma lineare, Fleming; Fusus Buchanensis, Mac gillivray; 
Mangelia linearis, Forbes and Hanley; Fusus multilinearis, 
Brown ; Mangelia Cranchiana, Leach. 
Habitat-—From 5 to 25 fathoms on gravel, coarse sand, 
and nullipore; everywhere throughout the district. Dead 
shells are very numerous, but live specimens, and especially 
full-grown ones, are by no means so. My finest specimens 
are from off Silvercraigs, Loch Fyne; they probably belong 
to the variety wqualis. 
British distribution.—Throughout our seas, chiefly in the 
Coralline zone ; a rather common shell. 
Foreign localities.—Iceland (Steenstrup), Norway (Lovén, 
and others), Spain, Madeira, and Canaries (M‘Andrew), 
Mediterranean, Adriatic, and Algean (Scacchi, Forbes, and 
others). 
