46 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
British distribution—lIn floating and fixed timber, on 
nearly all our_coasts. 
Foreign localities —From Finmark to Gibraltar, and the 
Mediterranean as far as the Adriatic. In America it is 
recorded by Mr. Whiteaves from Pictou, N.S., and from the 
eastern U.S. in Gould, ed. Binney. 
Ciass SOLENOCONCHIA, LAcazE-DUTHIERS. 
FAMILY DENTALIIDA, H. & A. Adams. 
SIPHONODENTALIUM, Savs. 
Siphonodentalium Lofotense, Sas. 
Habitat—My. Robertson’s cabinet contains about a dozen 
specimens of this species taken off Cumbrae. I am not 
aware that anyone else has found it in our firth. 
British distribution,—Apparently limited, so far as is 
yet known, to the northern and western seas of Scotland. 
Foreign localities—Mr. Jeffreys gives Norway (Sars), 
Gascony (de Folin), Naples and Sicily (Acton and others). 
Captain Spratt has dredged it in the Aigean. 
DENTALIUM, Linné. 
* Dentalium entalis, Linné. 
Habitat.—Common from 6 fathoms downward in muddy 
sand; it is a gregarious species, and is especially plentiful 
in 15 or 20 fathoms off Bogany point and the west side of 
Cumbrae. 
Foreign localities—North America (Mighels), Iceland 
(Verkriizen), Norway (Lovén and others), France (Lacaze 
Duthiers), Spain (M‘Andrew), Mediterranean (Scacchi and 
others), Augean (Forbes). 
CLtass GASTEROPODA. 
ORDER CYCLOBRANCHIATA, Cwvier. 
FaMILy CHITONIDA, Guilding. 
CuiTton, Linné. 
Chiton fascicularis, Linné. 
Chiton crinitus, Pennant. 
Habitat—On rough stony ground off St. Ninian’s Bay, 
Bute, 15 fathoms; off Little Cumbrae (south end) on similar 
ground; and at Lochgoilhead, about half a mile below 
