PECTEN, 5 
* Pecten varius, Linné. 
Ostrea varia, Linné; Pecten tenuis, etc,. Lister. 
Habitat: —Searce in 10 fathoms off Silvercraigs, Loch 
Fyne, in stony and shelly ground, young live specimens only. 
Single valves are common everywhere. I have never taken 
this species adult and living; but Dr. Landsborough reports 
it from Lamlash, and Mr. David Robertson has dredged it 
frequently at Cumbrae in an adult state. The variety nivea 
has not been taken in the district, so far as I know. 
British distribution.—Throughout the British seas, but 
probably not north of Orkney (Jeffreys). Forbes and Hanley 
state that “in Zetland it appears to be rare.” 
Foreign localities—Norway (Sars), north and south of 
Spain and Portugal (‘A ndvew), Mediterranean (Forbes), 
Red Sea (Andrew). 
* Pecten opercularis, Linné. 
Ostrea opercularis, Linné; Ostrea subrufa, Pennant. 
Habitat.—Gregarious and very common in 8 to 25 fathoms, 
in sandy gravel, with nullipore and dead shells. The variety 
lineata I have only taken off Craigmore, Bute. The ordi- 
nary type is plentiful in Bute, off Bogany, Craigmore, and 
Ascog; on the Tan Spit, Cumbrae ; off the Cock, Arran ; and 
at Moll Dhu and Silvercraigs, Loch Fyne. The varieties of 
colour are very great, ranging from pure white to rich dark 
brown; pink, yellow, and deep orange colours are not 
uncommon ; some in plain colours, and others mottled with 
pure white and dark brown. From the fishermen’s accounts 
this species is by no means so common as formerly, the beds 
having been severely dredged for bait, and the supply 
thereby greatly reduced. This “clam” is much esteemed as 
an article of food, especially in winter and spring; but it 
does not enjoy so high a reputation in this respect as its big 
brother, P. maximus. 
British distribution —Everywhere on suitable ground ; 
common. 
Foreign localities—Every where from Iceland to Madeira 
also in the Mediterranean and Algean Seas. 
* Pecten septemradiatus, O. F. Miller. 
Pecten Danicus, Chemnitz; Ostrea hybrida, Gmelin ; Pecten 
nebulosus, Brown; Pecten Jamesoni, Smith. 
Habitat. Although this species is probably common on 
suitable ground throughout the district, it is seldom or 
