932 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
immediate mouth of Morecambe Bay, where from which 
no marked plaice have been returned, and where little 
trawling is carried on. Immediately to the West of the 
line joining the Dee and Calf of Man, there also are 
few recaptures. The fishery in this area, which may be 
) 
called the “‘ Liverpool Bay off-shore area,’’ is mostly a 
summer and autumn one, and the largest catches are 
made in the months June to October. Plaice are, of 
course, caught all through the year in this area, but the 
fishery is distinctively a summer and autumn one. 
(2) A second plaice fishery area is that part of the 
sea North from the coasts of Anglesey and North Wales, 
both close in-shore and off-shore as far as the 20-fathom 
contour line. Occasionally the fishery is abundant as 
far Hast as the sea off Colwyn, but it is chiefly round 
Great Ormes Head in Carnarvonshire, in and off Red 
Wharf Bay out to the 20-fathom line, and in “‘ Channel 
Course’’ (the track of vessels approaching Liverpool 
from Point Lynus in Anglesey), that plaice are very 
abundant. ‘The fishery is a ‘‘ back-end ’”’ one, beginning 
about October or November, and ceasing usually in 
January and February. We may call this the ‘‘ Red 
Wharf Bay area.’’ 
(3) The third important plaice fishery area is that 
part of the sea East from the Isle of Man, and bounded 
on the South by the 54th parallel, and on the North by 
a line drawn from the North end of the Isle of Man to 
St. Bees Head in Cumberland. The fish are caught in 
greatest abundance in the vicinity of the banks extending 
from Ramsey Bay to the East. This fishery is a winter 
one, beginning about the end of the year and terminating 
in the early spring. 
The only other area to be considered is that in Luce 
Bay, on the South coast of Scotland. It is of very great 
