ARCA, LEPTON. 15 
Foreign localities—Norway (Sars), northern and south- 
ern coasts of Spain and Portugal, Madeira, and Canaries 
(M‘Andrew), Mediterranean and Aigean (ares, and others). 
Arca, Linné. 
Area lactea, Linné. 
Arca barbata Pennant ; Area crinita Pultene - Arca 
» ? Y; 
perforans, Turton. 
Habitat—Although I have never taken this species, nor 
seen an authentic Clyde specimen, it is included here on 
account of its frequent occurrence in Dr. Landsborough’s 
lists, and the partial confirmation of its capture obtained by 
Mr. Norman from the boatmen employed by Major Martin 
and Dr. Landsborough. It is a species that could hardly 
have been mistaken by the Rev. Doctor for any other living 
Clyde shell. Mr. Norman says: “Two or three were taken, 
some years since, near the Corriegills, Arran, by Dr. Lands- 
borough and Major Martin; but John Kelso (boatman), who 
accurately described the shells, tells me that, though he has 
repeatedly dredged there since, expressly for it, it has not 
since been met with.” Subsequent dredging has not, to my 
knowledge, confirmed the presence of this southern form in 
our waters. 
British distribution.—The British seas south of Scotland, 
becoming more common in the south of England and the 
Channel Islands. It is reported from Oban, and (as above) 
from Arran. 
Foreign localities —French Atlantic coast, north and south 
of Spain, Mogador, and Canaries (/‘A ndrew); Mediterranean 
and Aigean (Forbes, and others). 
Famity KeLiimp&, Forbes and Hanley. 
Lepton, Turton. 
* Lepton nitidum, Zurton. 
Kellia nitida, Forbes and Hanley. 
Habitat.—In gravel and nullipore, in about 20 fathoms ; 
searce. I have taken this species living off Silvereraigs and 
Otter Spit, Loch Fyne; and single valves east side of Cum- 
brae, and also at Craigmore, Bute. Mr. Norman records a 
single specimen from Lamlash Bay, Arran. 
British distribution. —Generally distributed throughout 
our seas, but somewhat local. 
Foreign localities—Drobak (Jeffreys); French Atlantic 
