154 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



lingered on until November. The fact of its appearing 

 at two stations so far apart as Cardigan Bay and Nelson 

 Buoy within eight days, added to its absence from the 

 Carnarvon Bay records at that time, and the fact that it 

 only reached Stations 6 and 7 at the end of July, and 

 never appeared at Station 5 or Station 14, seem to preclude 

 any possibility of the presence of such enormous numbers 

 being due to migration. 



SlPHONOPHORA. 



Muggiaea atlantica was again taken in Carnarvon 

 Bay in small numbers towards the end of September. It 

 was not found in other gatherings from here or from 

 Cardigan Bay. Last year it appeared on September 12th, 

 so that the time of its occurrence is the same in both 

 years. 



Pleurobrachia. 



A large shoal of this organism seems to have visited 

 the Lancashire coast in June and July. It first occurred 

 in my gatherings at Nelson Buoy on June 30th, when 

 one of two gatherings contained nothing but Pleuro- 

 brachia and a few decapod larvae; the other, which was 

 a small gathering, contained more Pleurobrachia than any- 

 thing else. Mr. Scott found it in abundance in Morecambe 

 Bay in July, the maximum appearing about July 8th, 

 while it was plentiful for some days before and about ten 

 days after this date. This has the appearance of a 

 migration from the southward, but the distribution of 

 Pleurobrachia is at all times so anomalous, and it occurs 

 under such widely varying conditions of temperature and 

 salinity, that it is impossible to make any definite state- 

 ment about its movements without a very extended series 

 of observations. 



