240 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
caught fish being about that due to the longer period of 
growth; (2) the northerly winter migration to the 
‘Bahama Bank’’ area. The mean length of the few 
fishes making this latter migration is 28 cms., so that 
there is a distinct segregation of the plaice, the smaller 
ones remaining in the in-shore waters and the larger 
ones beginning the off-shore spawning movement. 
A number of the plaice liberated have also migrated 
to the South into St. George’s Channel, but these may 
best be considered later on. 
The migrations of the fish lberated during the 
winter months differ notably from those made by the 
summer-liberated fish. They are represented on Chart LV. 
There are two principal migration paths (1) along the 
coast in an indifferent direction, the fish seeking the 
shallower waters just off-shore, and (2) the migration 
North to the “‘ Bahama Bank’’ area. Here again we 
see the segregation according to size, for the modal 
length of the plaice recaught on the shallow water 
erounds is only about 22 cms., while the mean length 
of the fish recaught on the Bahama Bank area is 
29 cms. Many of these winter-liberated fish have been 
recaught during the followimg summer, and these for 
the most part have performed the characteristic off-shore 
migration into the deeper waters of Liverpool Bay. 
Some have migrated into the Red Wharf Bay area, but 
one must not regard this as a likely summer migration 
path from the Liverpool Bay area, for some of the fish 
liberated in the latter area were brought from Red 
Wharf Bay, and at any rate the summer-caught fish may 
be only those which have moved into the Red Wharf 
Bay grounds during the previous winter. 
