32 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
nearly all our seas, but probably not north of the Hebrides. 
(Forbes and Hanley give Orkney and Zetland, fide M‘Andrew). 
Foreign localities. — Spain, Portugal, and Madeira 
(M‘ Andrew), Mediterranean-and Aigean (Forbes, and others). 
PsamMMopsta, Lamarck. 
Psammobia tellinella, Lamarck. 
Psammobia florida, Turton. 
Habitat—In sand and nullipore, in 12 to 15 fathoms; 
scarce. I have taken it outside the Tan Spit and off the 
west side of the Little Cumbrae. Mr. Norman reports it 
from Lamlash Bay. 
British distribution.—Local and rather scarce, but distri- 
buted over most of our coasts. 
Foreign localities—Norway (Lovén), Atlantic coast of 
France (Des Moulins), Spain and Portugal (M‘Andrew). 
* Psammobia Ferréensis, Chemnitz. 
Tellina Ferréensis, Chemnitz; Tellina incarnata, Pennant ; 
Tellina trifasciata, Donovan. 
Habitat—TIn coarse sand and gravel, from 5 to 30 fathoms; 
rather scarce in a living state. Dead (but perfect) shells are 
not uncommon. I have taken it living in Campbeltown 
Loch, at the Trench Point; on Bogany Point and Ascog 
Patch, Bute ; and on the Tan Spit, Cumbrae. Mr. Norman 
has taken a few specimens in Lamlash Bay. 
British distribution—On al! our coastx, north, south, east, 
and west, from 3 to 90 fathoms. 
Foreign localities—All European coasts from Norway to 
Spain, throughout the Mediterranean, and as far as the 
Sea of Marmora (Spratt). M‘Andrew records it from the 
Canaries. 
Famity MActrip&, Fleming. 
Mactra, Linné. 
* Mactra solida, Linné. 
Trigonella gallina, Da Costa; Mactra vulgaris, Chemnitz ; 
The variety truncata= Mactra truncata, Montagu ; Mactra 
subtruncata, Donovan (not Da Costa); and Trigonella 
zonaria, Da Costa. The variety elliptica=Mactra ellip- 
tica, Brown. 
Habitat.—The type occurs at low water at Ettrick Bay, 
