82 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
surface hauls taken at the same time. It was next met 
with on September 11th, at Station V, south of Calf 
Sound, inside the Wart Bank, when 100 specimens were 
taken in each of the two surface nets, 150 in the weighted 
net at 10 fathoms, and 5, 5, 5, 3 in the four vertical nets 
(two Hensen and two Nansen) hauled from 20 up to 10 
fathoms. It had evidently become distributed by this 
time all through the water around the Calf Island. The 
following day the species was present in nearly all the 
numerous nets worked at various depths down to 60 
fathoms in mid-channel; and it then reached its climax 
in numbers, 2,000 in the net at 10 fathoms and 2,500 in 
an open tow-net attached to the shear-net at 20 fathoms. 
Finally, on September 21st, M/zcrocalanus turned up for 
the first time in the surface gatherings taken across Port 
Erin Bay. It was present in these bay gatherings on 
October Ist (35) and 24th (100), November 8th (100), 
December 20th (80) and 23rd (50), and, finally, January 
Sth (50 specimens). 
This record looks like the immigration of an oceanic 
species in summer up the deep water of the mid-channel 
between the Isle of Man and Ireland, and then its gradual 
spread in late autumn into the shallower in-shore waters 
and finally to the surface of the bay, where it remained 
throughout the winter. 
Centropages hamatus (Lilljeborg) occurs in the Irish 
Sea all the year round. It is on our records for 1907 in 
every month, and 1s practically continuously present from 
January 8th to December 30th. The numbers are low at 
the beginning of the year, but reach 600 in one haul of 
the surface net by April 9th, and 1,300 on April 24th. 
Contrary to the usual rule, this species seems more 
abundant on the surface than deeper. 
Temora, longicornis (Mill.) occurs the whole year 
