14 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
do not know that this species has been taken alive in 
our firth. 
British distribution—Apparently very local; found in 
the Sound of Skye, the Minch, and Shetland; also off the 
Antrim coast (Jeff: Brit. Con.). ~ 
Foreign localities. —Greenland (Moller), Norway and 
Sweden (Asbjérnsen, Lovén, and others), Mediterranean 
(Nares). It is said also to have been taken in the Bay of 
Biscay. Not named by Gould, Dawson, or Whiteaves as an 
inhabitant of the American Atlantic coast, the headquarters 
of the group to which this species belongs. 
* Leda minuta, O. F. Miiller. 
Arca minuta, Miiller ; Arca caudata, Donovan; Leda cau- 
data, Forbes and Hanley. 
Habitat—Not uncommon amongst muddy gravel and 
stones on east side of Rothesay Bay, nearly opposite Bogany 
House, in 15 fathoms. Elsewhere it is somewhat scarce ; 
but occurs generally throughout the district. On a rough 
bank of stones and mud, outside Tan Spit, Cumbrae, 
I have taken good specimens, the largest yg of an inch 
broad. 
British distribution.-— Not uncommon throughout all 
Scotland, and north-eastern England as far as the Dogger. 
Searce, but generally distributed, in south and west of 
England, and on the Irish coast. 
Foreign localities—Massachusetts (Gould), Gulf of St. 
Lawrence (Dawson and Whiteaves), Greenland (Fabricius), 
Norway (Lovén, and others). Captain Feilden, of the recent 
Arctic Expedition, collected the variety complanata in 80° 
2’ N. lat., 70 fathoms. 
PectuncuLus, Lamarck. 
Pectunculus glycimeris, Linné. 
Arca glycymeris, Linné; Arca pilosa, Montagu; Pectunculus 
pilosus, Forbes. 
Habitat.—I have not taken this species alive—only single 
valves. Mr. Norman reports it from deep water, north-east 
of Holy Island; and Mr. D. Robertson has found it not 
uncommonly off Cumbrae, in a living state. 
British distribution—-Gregarious over almost all our 
coasts, “preferring a nullipore bottom in from 15 to 25 
fathoms” (Forbes and Hanley). Tt is not uncommon in the 
English Channel. 
