74 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
West of Scotland, and the Shetland Islands. A rare 
species. 
Foreign localities —Norway and Sweden (Malm), Naples 
(Acton), fide Jeffreys in Brit. Con. Supp. 
Odostomia acuta, Jeffreys. 
Habitat.—A single live individual and a few dead and 
worn specimens occurred outside the Tan Spit, Cumbrae, 
in 15-18 fathoms. It is also recorded from Loch Fyne 
by Mr. Barlee. 
British distribution.—Sparingly throughout most of our 
seas from the Channel Islands to Shetland. 
Foreign localities.—Norway and Sweden (M‘Andrew and 
others), Western France (Cailliaud), Spain, Portugal, and 
Canaries (M‘Andrew), Mediterranean (Jeffreys), Adriatic 
(Brusina). 
* Odostomia unidentata, Montagu. 
Turbo unidentatus, Montagu. 
Habitat—Not uncommon in muddy sand, and on scallop 
ground in from 10 to 20 fathoms. Distributed over the 
west side of Cumbrae, and north, east, and south of Bute. 
Mr. Norman records it from Lamlash Bay. 
British distribution—Throughout most of our coasts, 
from low water mark downward. 
Foreign localities. — Norway (Sars), Sweden (Malm), 
Western France (De Folin and others), Madeira (Watson). 
* Odostomia turrita, Hanley. 
Habitat—In rock pools, at low water, on the southern 
and western shores of Cumbrae, and at Ascog, Bute. <A 
scarce shell! in my experience. Mr. Norman reports it 
from Lamlash Bay, Arran. 
British distribution—From the Channel Islands to the 
Hebrides ; not uncommon, but local. 
Foreign localities.—Mr. Jeffreys gives the Cattegat, 
Brittany, Cannes, Spezzia, Dalmatia, Madeira and Teneriffe. 
Odostomia insculpta, Montagu. 
Turbo insculptus, Montagu ; Turbonilla obliqua, Loven. 
Habitat—Searce, in 15 to 30 fathoms, in muddy sand, 
nullipore and dead shells. I have taken it alive outside 
the Tan Spit, Cumbrae; and off Silvercraigs, Loch Fyne. 
Dead shells are occasionally found in deep water throughout 
the district. 
