88 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
all depths, and on all sorts of ground. At Fintry Bay finely 
coloured and clean specimens may be had at lowest ebb— 
both type and the short ventricose variety littoralis. In 10 
to 15 fathoms, in muddy gravel and nullipore, the largest 
specimens are usually got; 44 inches is the maximum length 
which I have seen attained by the type. This shellfish is 
seldom eaten in our district, but is appreciated in the large 
towns in England, where it is hawked, ready boiled, on the 
streets. 
British distribution.—Everywhere from low water to all 
depths ; very common. 
Foreign localities—Northern and western Europe, from 
Iceland (Verkriizen, and others) and Norway (Lovén) to 
Rochelle (D’Orbigny). In America it is common on the 
Labrador coast, the St. Lawrence Gulf, and as far south as 
New York (De Kay). 
FamiILy Muricip&, Fleming. 
TROPHON, De Montfort. 
Trophon Barvicensis, Johnston. 
Murex Barvicensis, Johnston ; Tritonium Barvicense, Lovén. 
Habitat—Mr. Robertson has two live specimens of this 
elegant shell, taken off the west side of Cumbrae. I have 
not had the good fortune to meet with it. Landsborough 
notes it from Lamlash Bay. 
British distribution—West and north of Scotland, and 
the east coast as far south as the Dogger Bank, where very 
fine examples were got by Mr. Leckenby. Several Irish 
localities are also on record. 
Foreign localities —N orway and Sweden (Sars,and others). 
* Trophon truncatus, Strém. 
Buccinum truncatum, Sirdm; Murex Bamflius, Montagu ; 
Trophon clathratus, orbes and Hanley. 
Habitat—On gravelly and nullipore bottom in 15 fathoms 
—off Ascog, Bute, one live specimen ; and off the west side 
of Cumbrae, several dead shells; scarce. Dr. Landsborough 
notes this species from Lamlash, where, however, Mr. Norman 
failed to obtain it. 
British distribution—Apparently most at home on the 
east coast. Alder records it as not rare off Northumberland, 
and Mr. Leckenby on the Dogger Bank ; whilst Dr. M‘Intosh 
