90 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
on the outer edge of the Tan Spit and off Shellbole Bay, 
Cumbrae; as well as off Moll Dhu and Otter, Loch Fyne. 
Mr. Norman and others record it from Arran. 
In Rothesay Bay it inhabits the thick tenacious mud so 
unproductive of molluscan life; the fishermen whom I 
employed there soon learned to distinguish this species, 
dubbing it “long nose.” Forbes and Hanley refer the present 
shell to Fusus Islandicus of Chemnitz. 
British distribution—Throuchout all our seas from 15 
fathoms or so downward; it becomes scarce in the south. 
Montagu took it frequently in the English Channel, but 
always dead; it has since been obtained there in a living 
state. Lister figures this shell, having found it on the beach 
at Scarborough. 
Foreign localities—Throughout the Arctic seas of both 
hemispheres, extending in Europe as far south as the Bay of 
Biscay, and in America to Massachusetts. 
Famity Nassip@, Stimpson. 
Nassa, Lamarck. 
Nassa reticulata, Linné. 
Buccinum reticulatum, Linné ; Buccinum vulgatum, Gmelin. 
Habitat—Cumbrae, at Battery Point and Fintry Bay, in 
sand at low water, plentiful; common in similar localities 
throughout the district. Mr. Norman, however, considered 
it rare, having only taken two or three “ unhealthy looking” 
specimens. I have also taken it, but not plentifully, in 
rock pools and below stones as high up as half-tide. On 
the Tan Spit, Cumbrae, it occurs alive in about 10 fathoms. 
British distribution.—Everywhere ; common, chiefly in 
sand at low tide. 
Foreign localities—Norway and Sweden (Lovén, and 
others), Spain, Portugal, Mogador, and Canaries (J/‘A ndrew). 
It extends throughout the Mediterranean. 
* Nassa incrassata, Stvdm. 
Buccinum inerassatum, Strém; Bueccinum minutum, Pen- 
nant; Buccinum coccinella, Lamarck ; Buccinum macula, 
Montagu. 
Habitat—Locally common on stony and gravelly bottom, 
from 8 to 30 fathoms. In Cumbrae it is found everywhere 
below the Laminarian zone except in mud. Specially fine 
examples are obtained on the west side of the Tan Spit, 
